Question

a ball of the mass 200g is thrown upward with an initial velocity of 30 m/s what is its kinetic energy at its highest point? what is the potential energy there?

Answer 1

Answer: K.E = 0 and P.E = 90J

Explanation:

When the ball is thrown upwards, Its initial kinetic energy is given by:

K.E = 0.5 mv²

where m is the mass, v is the velocity

K.E = 0.5 ×0.2 kg × (30 m/s)²= 90 J

As the ball goes upwards, Kinetic energy converts into potential energy.

At the highest point, instantaneous velocity is 0. So kinetic energy at the highest point is 0.

The kinetic energy is completely converted into potential energy. Hence, at the highest point:

P.E. = 90 J

Answer 2

Explanation:

See image above. Hope it helps. Mark me as brainlist and follow me.