How do you know if a cart's masses accelerate?

Will you chech and finish these for me, because i am stumped with them.

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.