Question

3) Two people push a car for 3 s with a combined net force of 200 N. (AS
(a) Calculate the impulse provided to the car.
(b) If the car has a mass of 1200 kg, what will be its change in veloci
(Ans: (a) 600 N.S (b) 0.5 m/s)
1.450​

Answer 1

ANSWER

(a) Impulse = impulsive force × time of impact

⟹ 200N×3s

⟹ 600N s

(b) Impulse = Change in momentum

= m×(v−u)

⟹1200kg×(v−0)=600Ns

⟹ v=

1200

600

⟹ v=0.5ms

−1