Question

A race car constantly accelerates from 0 to 100 m/s,south in 12.5 s.
A)What is the car's acceleration vector?
B) How far does it travel in that time interval?
C) What is its average velocity?

Answer 1

I will be happy to critique your thinking.

Answer 2

I do not know where to start

Answer 3

You should start by listing the given information.

vi = 0
vf = 100 m/s
t = 12.5s

a = (vf-vi)/t

A). a = (100m/s - 0m/s)/12.5 s
a = 8.00 m/s^2

B). You can use several equations for this question. I'm going to use: d = (vf + vi)/2 * t.

d= (100m/s + 0m/s)/2 * 12.5 s
d= 625m

C). Vave = d/t
Vave = (625m/12.5s)
Vave = 50 m/s

I do realize that this answer is 4 years late! :D, but maybe it'll help someone else.