A 1.13 × 103 kg car accelerates uniformly from rest to 10.6 m/s in 3.22 s.

Question

What is the work done on the car in this time interval?
Answer in units of J

Answer 1

W = F*d.

a = (V-Vo)/t
a = (10.6-0)/3.22 = 3.29 m/s^2.

F = m&a = 1130 * 3.29 = 3720 N.

d = 0.5a*t^2 = 0.5*3.29*(3.22^2)=17.1 m.
W = 3720 * 17.1 = 63,448 Joules.