Question

A 2-kg ball is thrown at a speed of ____, exhibits 25j of kinetic energy.

Answer 1

A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.

Step-by-step explanation:

Given that,

The mass of a ball, m = 2 kg

Kinetic energy of the ball, K = 25 J

We need to find the speed of the ball. The formula for the kinetic energy is given by :

`K=(1)/(2)mv^2\\\\v=\sqrt{(2K)/(m)} \\\\v=\sqrt{(2* 25)/(2)} \\\\v=5\ m/s`

So,

A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.