Force and Time in Collisions – Practice


1) A 5N force acts on a 600g mass for 1.2s

a) Calculate the magnitude of the impulse of the force on the mass:

b) Calculate the change in speed the impulse produces:


2) A force acts on a stationary 25kg wheel barrow for 2.5s, increasing its speed to 2 m/s.

a) Find the impulse the force applies:

b) Find the force applied to the car.


Quick Answers:

1) a) 6 Ns     b) 10 m/s

2) a) 50 Ns     b) 20 N

Worked Answers: