5.I was wondering if you could help me with some Linear Motion Physics Problems. For the first question, I completed
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).
6.Hi, I would like to know how I can check the concentration of phosphoric acid (V) in descaler product for
t for steamers. I got this: https://www.gastrro.pl/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/6/4/648050.jpg Ingredients: phosphoric acid (V), anionic surfactants less than 5%. Lately my mother/father was cleaning the steamer for food with it and today I've noticed the black residue on the bottom of the water in steamer and I've been eating vegetables from that steamer for like many days and just adding water, didn't replace it fully. Wondering if that could impact my health somehow. I'm a bit nervous, thanks.