Question

The force required to move an object of mass 8 kg in first 4 seconds after the start if velocity acquired is 2m/s is ​

Answer 1

Step-by-step explanation:

Mass of the body =10 kg

Initial velocity u=4 m/s

Final velocity v=8 m/s

Time t=2s

a) Momentum before force acts p

1

=m×u=10×4=40kg.m/s

b) Momentum after force acts p

2

=m×v=10×8=80kg.m/s

Answer 2

Answer:

see attached pic hope it helps you