AP Physics 1 Semester 1 Exam Review

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

Which position has the most kinetic energy in a system?

Back

The position with the highest speed has the most kinetic energy.

Front

What is the net force acting on an object moving at constant velocity?

Back

The net force is zero, as there is no acceleration.

Front

What happens to the center of mass of a system when a person walks on a raft?

Back

The raft moves in the opposite direction to maintain the center of mass of the system.

Front

How far does a raft move if a person walks from one end to the other?

Back

The raft moves a distance of 2d, where d is the initial distance of the center of mass from the raft's center.

Front

What is the formula for velocity?

Back

Velocity (V) is defined as V = Δx/t, where Δx is the change in position and t is the time taken.

Front

How is momentum defined?

Back

Momentum (p) is defined as the product of an object's mass and its velocity, p = mv.

Front

What is the momentum of a biker with a mass of 75 kg moving at 5 m/s?

Back

The momentum is 375 kg m/s, calculated as p = mv = 75 kg * 5 m/s.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the principle of conservation of momentum?

Back

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