Question

a force of 20 Newton is applied on a lorry of mass 15 kg and it's velocity changes to 12 m/s calculate the time spent in this process​

Answer 1

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

Answer 2

Hope the attachment helps you...