C. Seismic energy
This is energy that is released in earthquakes.
It must have a medium. It must travel in empty space. Mechanical waves are waves which needs medium of propogation.
Ball thrown into the air at an angle.
I think it is when shot scrapes off the top of the turf
Answer:
At point A, the cart has high potential energy. At point b, the cart is pulled down by gravity. At point c, the cart gains its highest kinetic energy. At point d, the cart returns back to the same state but with lower potential energy.