A they all move the same speed in a vacuum this is because in a the photons don't bump in to anything
Answer:
A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.
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 :

So,
A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.
Answer:
102.04kg
Explanation:
(1000kg*m/s^2)/(9.8 m/s^2)