Question

An object is thrown vertically upwards. As it rise, its total energy

• A. Decreases
• B. Increases
• C. Remains constant
• D. None

Answer 1

The correct option is C Remains constant

Total Energy = Kinetic Energy + Potential Energy

As object move upward is velocity will decrease due to deceleration by gravity.

So its kinetic energy =$\frac{1}{2}m{v}^2$ will decrease as it move upward.

But its potential energy =$mgH$ will increase as it move upward.

Hence, total energy will remain constant.