Question

2. An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If
the object is allowed to fall
, find its kinetic energy when it is half-way down.
3. A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will be the
ratio of two kinetic energies?​

Answer 1

Answer:

Potential Energy= mgh...

Where, m=40kg...

Where, g=10m/s^2...

Where, h=2m....

P.E.= 40*10*5....

P.E.=2000J...