Question

a ball of mass 250g has the kinetic energy equal to 600j . what is the speed with which the ball is moving?​

Answer 1

Answer:

69.29 m/s (approx.)

Explanation:

Given:

Mass (m) = 250g = 0.25kg

Kinetic Energy (K) = 600J  

To Find:

Speed of the ball (v)

Formula:

K = 1/2*mv²

⇒ 600 = 1/2 * 0.25 * v²

⇒ (600 * 2)/0.25 = v²

⇒ 4800 = v²

⇒ v = √4800 = 69.2820323028 ≈ 69.29 m/s          

Hence, the speed at which the ball is moving is approximatley 69.29 m/s.

Answer 2

Answer:

69.29 is the correct answer