Question

A ball is thrown 6m above the ground. Its total energy at that point is 12 J. What is the total energy of the ball at a halfway point of motion

Answer 1

5.99 J

Step-by-step explanation:

A ball is thrown 6m above the ground.

Its total energy at that point is 12 J.

The energy of the ball is given by :

E = mgh

Where

m is the mass of the ball

`m=(E)/(gh)\\\\m=(12)/(9.8* 6)\\\\m=0.204\ kg`

Let E' is the total energy of the ball at a halfway point of motion. h' = 3 m

So,

`E'=mgh'\\\\E'=0.204* 9.8* 3\\\\E'=5.99\ J`

So, the required energy is 5.99 J.