Amechanic pushes a 2.50*10^3 kg car from rest to a speed of v, doing 5.00*10^3 Jof work in the process, During this time, the car moves 25.0m. Neglecting friction between car and road, find (a) v and (b) the horizontal force exerted on the car

Answer 1

b. W = F*d = 5,000,
F*25 = 5,000,
F = 200 N.

F = M*a = 200,
2500*a = 200,
a = 0.08 m/s^2.

a. V^2 = Vo^2 + 2a*d = 0 + 0.16*25 = 4,
V = 2 m/s.