The velocity of an object moving along a line is given by v t t feet per second a find the displacement

is year. Considering the shortest air travel distance of 109 Km, how much velocity is required for a missile (approximately 4.5 kg) fired at 45 degrees from Palestine to reach Israel border?

g and 30 cm each, respectively. Both M1 and M2 rest on frictionless surfaces and the system starts from rest. (a) Draw the fbd for each of M1, M2 and the pulley. (b) Write the equations of motion for each of M1, M2 and the pulley. (c) Calculate the linear acceleration of the two masses, as well as the angular acceleration of the pulley. (d) Calculate the angular velocity of the pulley after M1 and M2 have been displaced linearly by 2 m. Q2) (10 points) A basketball is thrown with an initial speed v0 of 10.8 m/s at 400 above horizontal, and it enters the hoop from above. The ball is released at 2.00 m above the ground. The hoop is 3.05 m above the ground and 10.0 m away from the player. (a) Find the time at which the ball passes through the hoop. (b) Find the ball’s velocity (express in component form) just when it enters the hoop. (c) Find the ball’s maximum height. Q3) (5 Points) An object is thrown up from the top of a building of height of 400 m with an initial velocity of 20 m/s. (a) Find the position and the velocity of the object 5 s later. (b) With what velocity will it hit the ground? (c) At the same time the first object is thrown up, a second object is thrown up from the ground at 100 m/s. Will the two objects collide? If yes, calculate when and where,

es an altitude of 4.50 x 102 m [up]. a) What is the spacecraft's acceleration? b) At what velocity is the spacecraft travelling when it reaches this altitude?

movement, the object slows to a stop over a distance of 200m. The car accelerates again from rest until it hits a final velocity of 80mph when it then crosses its finish line. The total distance traveled was 1.1 km. Please compute the acceleration for each portion of its trip. Then, find the total time the object took to complete its course.

hin a free demo session as I have my answers, but just want to confirm them, that would be greatly appreciated. Question 1: A block of mass M = 0.10 kg is attached to one end of a spring with spring constant k = 100 N/m . The other end of the spring is attached to a fixed wall. The block is pushed against the spring, compressing it a distance x = 0.04 m . The block is then released from rest, and the block-spring system travels along a horizontal, rough track. Data collected from a motion detector are used to create a graph of the kinetic energy K and spring potential energy Us of the system as a function of the block's position as the spring expands. How can the student determine the amount of mechanical energy dissipated by friction as the spring expanded to its natural spring length? Question 2: The Atwood’s machine shown consists of two blocks connected by a light string that passes over a pulley of negligible mass and negligible friction. The blocks are released from rest, and m2 is greater than m1. Assume that the reference line of zero gravitational potential energy is the floor. Which of the following best represents the total gravitational potential energy U and total kinetic energy K of the block-block-Earth system as a function of the height h of block m1? Question 3: A 2 kg block is placed at the top of an incline and released from rest near Earth’s surface and unknown distance H above the ground. The angle θ between the ground and the incline is also unknown. Frictional forces between the block and the incline are considered to be negligible. The block eventually slides to the bottom of the incline after 0.75 s. The block’s velocity v as a function of time t is shown in the graph starting from the instant it is released. How could a student use the graph to determine the total energy of the block-Earth system? Question 4: A block slides across a flat, horizontal surface to the right. For each choice, the arrows represent velocity vectors of the block at successive intervals of time. Which of the following diagrams represents the situation in which the block loses kinetic energy?

nd from your perspective has a velocity of 12 m/s. Having just looked at your speedometer you know that your velocity is 6 m/s. If the roads for the intersection are perpendicular to one another, what would the other drivers speedometer read? *Do not put units in your answer*

mediately guess it’s moment of inertia. To investigate whether it behaves more like a solid sphere or hollow sphere, you roll it down a rough ramp inclined at an angle of 30° with respect to the horizontal. The sphere rolls without slipping and you measure the velocity of the center of mass to be 3 m/s as it leaves the bottom of the ramp. The ramp’s length is 2 m and you release the sphere from the top of the ramp, a height of 1 m. a) What is the moment of inertia of the sphere? b) What is the angular speed of the sphere as it reaches the bottom of the ramp? c) What is the frictional force on the sphere?

countered (unidirectional flow or parallel flow). The planer walls and the fluids are initially at rest. Lower plate moves to left and upper plate to right. Let the fluids be an oil, where kinematic viscosity (ν) = 2.17 x 10-4m2/s and the distance between both plate (h) is 10 mm. U0 = 0.4 m/s I need to find the governing equation, boundary conditions, initial conditions and to derive velocity distribution in steady state. Also, Use FTCS explicit method to calculate the velocity distribution as a function of time by implementing these governing equation in Matlab

ond. The function s(t)=-16t^2 +64t +93 describes the​ ball's height above the​ ground, s(t), in​ feet, t seconds after it is thrown. The ball misses the rooftop on its way down and eventually strikes the ground. What is its instantaneous velocity as it passes the rooftop on the way​ down?

85 ft/second. The function h(t)=-16t2+85t+112 models the height, in feet, of the ball at time t, in seconds. For how many seconds is the ball in the air?

motionless puck as shown on the picture above. The net force that the stick applies on the puck is 150N and the contact lasts for 7.5 ms. The mass of the puck is 166 g. A) (1 point) Calculate the acceleration of the puck under the influence of the net force. B) (2 points) Calculate the puck's change in momentum due to the impulse applied by the hockey stick. C) (1 point) What is the velocity of the puck once it leaves the stick? Puck travels over rough ice and comes to a stop after 25 m. The force diagram below shows all forces acting on the puck during that travel. Screen Shot 2020-11-02 at 2.04.05 PM.png D) (1 point) Calculate the work done on the puck by gravitational force. E) (1 point) Calculate the work done on the puck by normal force. F) (2 points) Calculate work done by friction force on the puck. CNX_UPhysics_09_03_HockeyPuck.jpg Now stationary, the puck (red) collides with a blue puck of the mass .332 kg moving to the left with velocity of 2.5 m/s. If collision is perfectly elastic calculate: H) (2 points) Total momentum of blue+red puck system before collision? I) (1 point) What is the total momentum of blue+red puck system after collision? How do you know? J) (2 points) What is the velocity of the blue puck after collision?

ing 9.8 m/s after 1 second, 19.6 m/s after 2 seconds, and so on. Use the data values in your table to sketch a rough graph of velocity versus time for the 10° angle and another for the 40° angle. What value do the slopes of these graphs represent? Which graph has the greater slope? Why?

18 m/s from a height of 12.5m. The water balloon hits the person who is 1.8 m tall. How far from the building is this person standing?

ance is negligible, what is the ball’s speed at the instant it reaches its maximum height from the ground? A. - 20 m/s B. 0 m/s C. + 17.3 m/s D. + 10 m/s E. + 20 m/s 2. A rhino charges full speed at a car with an initial velocity of 15 m/s. When the rhino collides with the car, it crumples in by 1 m before the rhino comes to a complete stop. What acceleration did the rhino feel as it came to a stop? A. - 112.5 m/s^2 B. - 7.5 m/s^2 C. - 30 m/s^2 D. + 112.5 m/s^2 E. + 30 m/s^2 F. + 7.5 m/s^2 3. Two students want to determine the speed at which a ball is released when thrown vertically upward into the air. One student throws the ball into the air while the other student measures the total time that the ball is in the air. The students use a meterstick to measure the release height of the ball. Which of the following equations should the students use to determine the speed at which the ball was released? * A. Use y final = y initial+ v initial *t + (1/2)*a*t^2 from the moment in time in which the ball was released to the moment in time in which the ball reaches its highest point. B. v final^2 = v initial ^2 + 2a(????y) from the moment in time in which the ball was released to the moment in time in which the ball hits the ground. C. Use y final = y initial+ v initial *t + (1/2)*a*t^2 from the moment in time in which the ball was released to the moment in time in which the ball hits the ground. D. v final^2 = v initial ^2 + 2a(????y) from the moment in time in which the ball was released to the moment in time in which the ball reaches its highest point.

eet after t seconds is given by y=75t-16t^2. Find the average velocity for the time period beginning when t = 2 and lasting. 1) 0.1 seconds 2) 0.01 seconds 3) 0.001 seconds Finally based on the above results, guess what the instantaneous velocity of the ball is when t=2.

s at a 'u' velocity towards the south , and it's given that the maximum velocity of the ship's canon is λu ( λ<1) and the max range they can be shot at is 'v', show that if λ^2 +(v/d)^2 <1 , 1) that the illigal boat can avoid any harm caused by the navy ship. ( use relative velocity triangles and geometry)​

displacement of the object from t=0 to t=6 seconds B) find the distance traveled by the object from t=0 to t=6 seconds

to show which force is larger [5 marks] {Part B} Determine the MASS of the elevator [2 marks] {Part C} The elevator begins to accelerate UPWARDS from rest at 5.0 m/s². What is the force tension in the cable? [3 marks] {Part D} The same elevator is moving UPWARDS and starts to DECELERATE at 3.0 m/s². What is the force tension in the cable? [3 marks] {Part E} The elevator moves DOWN at CONSTANT velocity at 10 m/s. What is the force tension in the cable? [2 marks] {Part F} The elevator cable snaps (and everyone screams!). What are the forces working on the elevator now? Draw a diagram [2 marks]

is launched from a height of 6 feet with an initial upward velocity of 64 feet per second. The​ T-shirt is caught 41 feet above the field. How long will it take the​ T-shirt to reach its maximum​ height? What is the maximum​ height? What is the range of the function that models the height of the​ T-shirt over​ time?

airplane descending at a speed of 120 miles per hour at an angle 24º below the horizon (left to right). Round all answers to the nearest hundredth. 2. Forces with magnitudes of 250 pounds and 130 pounds act on an object at angles of 45º and -60º, respectively, with the positive x-axis. Find the direction and magnitude of the resultant of these forces. 3. Two ropes support a 180-pound weight, as shown in the figure(Attached File). Find the tension in each rope.

d balls for all players is normally distributed with a mean of 87 mph and a standard deviation of 2.5 mph. For any sample of individual batted balls hit by one player, the standard deviation of exit velocity of those batted balls around this particular player's true-talent AEV is 9 mph. At this point in the season, Marco Masher has a total of 10 batted balls with an average exit velocity of 96 mph. Given only this information, the best estimate for his "true talent" exit velocity is closest to which whole number?

n, I completed parts A and B, but can't get C. We get all the answers to the questions but not how to get to the answer. The question is: Patrick changes velocity from 2.0 m/s North to 4.0 m/s South with an acceleration of 0.50 m/s/s South. (A) Determine how much time this process takes (ANSWER: 12 s). (B) Find his displacement (magnitude and direction) (ANSWER: 12 m South). (C) Find how much distance Patrick covered (ANSWER: 20 m). Another question I was having trouble with was this (I got part A but not parts B or C): Two cars are traveling along a straight line in the same direction, the lead car at 25.0 m/s and the other car at 30.0 m/s. At the moment the cars are 40.0 m apart, the lead driver applies the brakes, causing his car to have an acceleration of -2.00 m/s/s. (A) How long does it take for the lead car to stop? (ANSWER: 12.5 s). (B) Assuming that the chasing car brakes at the same time as the lead car, what must be the chasing car's minimum negative acceleration so as not to hit the lead car? (ANSWER: -2.29 m/s/s). (C) How long does it take for the chasing car to stop? (ANSWER: 13.1 s).

he mining ship has a mass of 10,000 kg. The first rocket stage provides a thrust of 80 kN and is used over a distance of 100,000 km. The second rocket stage provides a thrust of 40 kN and is used over a distance of 200,000 km. The third rocket stage provides a thrust of 30 kN and is used over a distance of 400,000 km. 1) Calculate the final velocity of the rocket using two methods: a. Using the work-energy theorem. b. Using kinematics and Newton’s laws of motion. Hint: You might need to use the quadratic formula to solve for t: 2) Calculate the total amount of time it takes for the mining ship to reach the other asteroid. 3) If the ship has a reverse thruster that provides 200 kN of thrust, how many km before reaching the destination should the mining ship engage the reverse thrusters?

ocity of 12.0 m/s. (a) If its initial velocity is 6.00 m/s, what is its displacement during the time interval? (b) What is the distance it travels during this interval? (c) If its initial velocity is 26.00 m/s, what is its displacement duringthe time interval? (d) What is the total distance it trav- els during the interval in part (c)? Just part d please