Question

a car of mass 1200kg s moving at velocity 30m/s .on applying brakes its velocity is reduced to 10m/s .find change in momentum

Answer 1

Answer:

-24000 kg/ms^-1

Explanation:

Momentum = mass * velocity

Before Applying Brake

p = 1200 * 30

b = 36000 kg / ms^-1

After Applying Brakes

p = 1200 * 10

p = 12000 kg/m s^-1

Change In Momentum

Final momentum - Initial Momentum

12000 - 36000

= -24000kg/m s^-1