AP Physics Unit 2

Front

What is the normal force?

Back

The normal force is the force exerted by a surface that supports the weight of an object resting on it, acting perpendicular to the surface.

Front

Under what condition can the normal force equal the gravitational force?

Back

The normal force can equal the gravitational force when the surface is horizontal and the gravitational force acts perpendicular to the surface.

Front

What is net force?

Back

Net force is the total force acting on an object, taking into account all the individual forces and their directions.

Front

If an object moves at a constant velocity, what is the net force acting on it?

Back

The net force acting on an object moving at constant velocity is 0 N.

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, resulting in no acceleration.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, typically measured in meters per second squared (m/s²).

Front

How do you calculate force using mass and acceleration?

Back

Force can be calculated using Newton's second law: F = m * a, where F is force, m is mass, and a is acceleration.

Front

What is the formula for calculating the average force exerted on an object?

Back

Average force can be calculated using the formula: F = (mass * change in velocity) / time.

Front

What is the relationship between mass and acceleration in a system of connected objects?

Back

In a system of connected objects, the total mass affects the acceleration when a force is applied; the greater the mass, the less the acceleration for a given force.

Front

What is frictionless motion?

Back

Frictionless motion refers to the movement of an object where no frictional forces oppose its motion, allowing it to accelerate freely.