Question 3
Initial kinetic energy = (1/2)*m*vi²
Final kinetic energy = 0
Work done to dissolve this kinetic energy = F*d
Let
(1/2)*m*vi² = F*d
m is the mass given 41 Kg
vi is the initial velocity 53 Km/hr ( Convert it to m/s )
F is the force needed in this question
d is the distance moved by the car 65 cm ( Convert it to m )