Question

A constant force of 20 N acts on a body for 5 s. Find the change in the momentum of body. ​

Answer 1

Step-by-step explanation:

"solve: given that F -12 N and time 4 seconds and let we have to find out the P.

F = 12 N

t = 4 s

p = ?

F = m×( v - u ) / t

12 = m×v / 4

m×v = 12× 4

p = 48 kg m/s

Linear momentum will be 48 kg m/s.

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Answer 2

Answer:

Change in momentum of the body = 100 N s.

Step-by-step explanation:

Given  problem

The constant force acting on a body = 20 N    

                                     the time given = 5 s  

here we need to find change in momentum of the body  

From newton's 2nd law if a constant force acts on a body for a certain time, then the change in momentum of body is equals to the product of force and the time

⇒   change in momentum = force × time

                                           =  20 N × 5 sec      

                                           = 100 N sec

change in momentum of the body = 100 N s.