Question

A stone of mass 750g is thrown vertically upwards with a velocity of 10m/s. Find the potential energy at the greatest height.

Answer 1

Given :

Mass is 750 g

In term of kg :

Mass is 0.75 kg .

Velocity ( v ) = 10 m / sec

We have formula for kinetic energy :

K.E. = 1 / 2 m v²

Putting values now :

K.E. = 1 / 2 × 0.75 × 10 × 10

K.E. = 1 / 2 × 75 J

K.E. = 37.5 J

Since K.E . = P.E.

Thus potential energy of stone is 37.5 J.

Answer 2

Answer:

Potential Energy at the greatest point = 37.5 J

Explanation:

We Have :-

A stone of mass 750 gm = 0.75 kg

Velocity = 10 m/s

To Find :-

Potential Energy at the greatest height

Formula Used :-

Kinetic Energy = 1 / 2 m v²

Solution :-

Kinetic Energy = 1 / 2 * 0.75 * 10 * 10

                        = 37.5 J

At the Greatest Point

Kinetic Energy = Potential Energy

Potential Energy = 37.5 J

Potential Energy at the greatest height = 37.5 J