AP Physics 1 Forces

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

Define force in the context of physics.

Back

A force is a push or pull on an object resulting from the object's interaction with another object.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g), where g is approximately 9.81 m/s² on Earth.

Front

Explain the concept of net force.

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration.

Front

What happens to the acceleration of an object if the net force acting on it is zero?

Back

If the net force is zero, the object will maintain its current state of motion (either at rest or moving at a constant velocity).

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

According to Newton's Second Law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).

Front

Define inertia.

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the object's mass.

Front

What is the effect of an upward acceleration in an elevator on the reading of a scale?

Back

If the elevator accelerates upward, the scale will read a value greater than the person's weight due to the additional force exerted by the elevator.

Front

How does friction affect motion?

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can slow down or stop the motion of an object.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on an object at rest and prevents it from starting to move, while kinetic friction acts on an object in motion and opposes its movement.