AP Physics C: Unit 3 Practice MC (Shortened)

Front

What is the formula for the speed of a pendulum ball at the low point of its swing when released from an angle?

Back

Front

Define average power in the context of physics.

Back

Front

What is the work done by a force F at an angle θ when moving an object at constant velocity?

Back

Front

Explain the relationship between spring compression and kinetic energy in a marble launcher.

Back

Front

What is the principle of conservation of energy in the context of an object thrown from a height?

Back

The principle states that the total mechanical energy (potential + kinetic) of the object remains constant if only conservative forces are acting. Energy lost to friction is the difference between initial and final mechanical energy.

Front

Define kinetic energy and provide its formula.

Back

Front

What is the significance of the coefficient of friction in physics problems?

Back

Front

How do you calculate the energy lost to friction when an object is thrown from a height?

Back

Front

What is the formula for potential energy at a height h?

Back

Front

Explain the concept of constant velocity in the context of forces acting on an object.

Back

Constant velocity means that the object's speed and direction remain unchanged. This occurs when the net force acting on the object is zero, meaning all forces are balanced.