A body of mass 10 kg is moving with velocity-1of 10 ms . A force acts for 5 seconds to reduce-1its velocity to 2 ms . Find the momentum ofbody before and after application of the forceon it
Question
A body of mass 10 kg is moving with velocity-1of 10 ms . A force acts for 5 seconds to reduce-1its velocity to 2 ms . Find the momentum ofbody before and after application of the forceon it
Solution
The momentum of an object is calculated by the formula:
Momentum = Mass x Velocity
- Before the application of the force:
The mass of the body is 10 kg and the velocity is 10 m/s. So, the momentum before the application of the force is:
Momentum = 10 kg x 10 m/s = 100 kg.m/s
- After the application of the force:
The mass of the body is still 10 kg, but the velocity has been reduced to 2 m/s. So, the momentum after the application of the force is:
Momentum = 10 kg x 2 m/s = 20 kg.m/s
So, the momentum of the body before the application of the force was 100 kg.m/s, and after the application of the force it was reduced to 20 kg.m/s.
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