Question

Read the scenario, then answer the questions. a 2 kg ball is thrown upward with a velocity of 15 m/s. what is the kinetic energy of the ball as it is being thrown?j what is the potential energy of the ball when it gets to its maximum height just before falling back to the ground?j

Answer 1

Explanation:

We have,

Mass of the ball is 2 kg and it is thrown upward with a velocity of 15 m/s.

It is required to find the kinetic energy of the ball as it is being thrown. The kinetic energy is possessed due to the motion of motion. It is given by :

$E_k=\dfrac{1}{2}mv^2\\\\E_k=\dfrac{1}{2}\times 2\times 15^2\\\\E_k=225\ J$

Let potential energy of the ball when it gets to its maximum height just before falling back to the ground will be equal to the kinetic energy i.e. 225 Joules. As the energy of the system remains conserved.

Answer 2

Both answers are 225 J