- #1

Arden

- 5

- 0

s=300

This is what I did

Car:

Vi = 0, a = .8

Vf^2=2as = Vf=21.9

Vf=at

21.9/.8 = 27.38

t=27.38sec

Truck:

S=(V/2)t

S=(15)t

300/15 = 20

t=20

They meet after (27.38 -20) = 7.38 seconds.

The answer given is 8.94seconds. Not sure what I am doing wrong?