36. The gravitational potential energy of an object is converted into:
a) Kinetic energy when it falls freely
b) Elastic potential energy when it is compressed
c) Thermal energy when it is heated
d) All of the above
37. The concept of escape speed is based on the principle of:
a) Conservation of energy
b) Conservation of momentum
c) Conservation of mass
d) Conservation of charge
38. The gravitational force between two objects is stronger when their masses are:
a) Small
b) Large
c) Equal
d) Unrelated to their masses
39. Which of the following is true about gravitational potential?
a) It depends on the mass of the object
b) It depends on the distance from the object
c) It depends on both the mass and distance from the object
d) It does not exist
40. The gravitational potential at a point in space is defined as the:
a) Gravitational force at that point
b) Gravitational field strength at that point
c) Gravitational potential energy of an object at that point
d) Gravitational potential energy per unit mass at that point
