Question

Johanna is studying what happens to the energy as a ball rolls down a ramp. What is she studying? Check all that apply.

A)gravitational potential energy
B)electrical energy
C)kinetic energy
D)mechanical energy
E)elastic potential energy

Answer 1

a gravitatinal potential energy okk betu

Answer 2

Answer: The correct answer is A) gravitational potential energy, C) kinetic energy  and D) mechanical energy

Explanation:

The mechanical energy of a body is the sum total of kinetic and potential energy.

When the ball is at the top of the ramp, it has gravitational potential energy due to its position from ground. Here, the total mechanical energy is equal to the potential energy.

When the ball is rolling down, it gains kinetic energy. Here, the mechanical energy is the sum of kinetic and potential energy at the point under consideration.

Just before reaching the ground, the potential energy of the ball is zero while the total mechanical energy is equal to the kinetic energy.