You are driving through town at 12.0 m/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.7 m/s2 .
part A=How far do you travel before stopping?
part B= When you have traveled only half the distance in part A, is your speed 7.0 m/s , greater than 7.0 m/s , or less than 7.0 m/s ?
4 answers
helppp please
A. V^2 = Vo^2+2a*d = 0
144-7.4d = 0.
d = 19.5 m.
B. V^2=Vo^2+2a*d = 144-7.4*(19.5/2) = 71.85
V = 8.5 m/s
.
144-7.4d = 0.
d = 19.5 m.
B. V^2=Vo^2+2a*d = 144-7.4*(19.5/2) = 71.85
V = 8.5 m/s
.
how did you get 8.5
The only wrong with his problem is that he accidentally did 3.2 x 2 = 7.4. It should be 6.4 hence your answer should be 31 m.
5 answers