True or false? Work is done when an object is moved by a force.

True or false? Work uses a different SI unit to energy.

True or false? Gravitational potential energy is energy stored in an object because of its position in the Earth's gravitational field.

True or false? Kinetic energy is the energy of an object when it is stationary.

True or false? Momentum is a scalar quantity.

True or false? In a closed system, the total momentum before an event is equal to the total momentum after the event.

True or false? In an explosion, the total momentum is zero.

True or false? If, in an explosion, two pieces of debris move apart, they will not move with equal and opposite momentum.

True or false? If the impact time is increased, the impact force will be increased.