Question

a certain force act on a body of mass 10 kg and change it's velocity from 2 m s-1 to 5 m s-1. calculate the work done by the force​

Answer 1

Answer:

Answer

Given : Initial velocity u=5 m/s

Final velocity v=2 m/s

The work done is equal to the change in the kinetic energy of an object.

W=

2

1

m(v

2

−u

2

)

W=

2

1

×20×(2

2

−5

2

)

⟹W=−210 J