Question

4. Derive an expression for gravitational potential
energy for an object.
5. Can any object have mechanical energy even if its
momentum is zero ? Explain.
6. Can any object have momentum even if its
mechanical energy is zero ? Explain.
7. Why does a saw become warm when it is used to
cut a wooden log? State the energy transformation.
8. A stone is dropped from a height 'h'. Prove that the
energy at any point in its path is 'mgh'.​
9. Derive a relationship between linear momentum and kinetic energy.
10. A light and a heavy object have the same momentum. Find out their ratio of kinetic energy. Which one has larger kinetic energy.

Answer 1

Answer:

10 questions for only five points .....

I can't solve them....

really sorry...