Physics help, please!!?

Science & Mathematics by Anonymous 2018-07-08 11:33:58

Social Science

3 answers

A car is moving 28.5 m/s when it sees a policeman. It slows to 15.0 m/s in 2.37 s, then drives at a constant speed for 8.25 s. How far does the car travel in the problem?

Anonymous

Easiest way to solve this is to draw speed versus time graph and calculate area under curve which is equal to distance travelled / covered. See attachment.
Anonymous

175 m
Anonymous

d = d1+d2 = (28.5+15)/2*2.37+15*8.25 = 175.30 m