Question

A body of mass 5kg is moving with velocity 2m/s applied with a certain force to reach its velocity 5m/s. i) Find the change in momentum of the body.

Answer 1

Given:-

• Mass,m = 5 kg

• Initial velocity,u = 2 m/s

• Final velocity,v = 5 m/s

To be calculated:-

Calculate the change in momentum of the body.

Formula used:

Change in momentum = Final momentum- Initial momentum

Solution:-

Initial momentum = mass × initial velocity

= 5 × 2

= 10 kg.m/s

Final momentum = mass × final velocity

= 5 × 5

= 25 kg.m/s

Now,

Change in momentum = Final momentum- Initial momentum

★ Substituting the values in the above formula,we get:

Change in momentum = 25 - 10

Change in momentum = 15 kg.m/s

Hence,the the change in momentum of the body is 15 kg.m/s.

Answer 2

YOUR QUESTION :

A body of mass 5kg is moving with velocity 2m/s applied with a certain force to reach its velocity 5m/s. i) Find the change in momentum of the body.

YOUR ANSWER :

Given :

• Mass = 5 kg.
• Initial velocity = 2 m/s.
• Final velocity = 5 m/s.

To be calculated :

• Calculate the chance in momentum of the body.

Formula :

✔Change in momentum =

(Final momentum-Initial momentum).

Solution :

Initial momentum = Mass × Initial velocity

= 5 × 2

= 10 kg. m/s.

Final momentum = Mass × Final velocity

= 5 × 5

= 25 kg. m/s.

Substituting the values in the above formula,We get :

Change in momentum = 25 - 10

= 15 kg. m/s.

ANSWER :

$\green{\boxed{\boxed{\boxed{15 kg. \: m/s }}}}$