Flashcard: Forces

Front

What is a contact force?

Back

A contact force is a force that requires physical contact between two objects. Example: Sitting in a chair.

Front

What can be said about the net force if an object is not accelerating?

Back

The net force is zero.

Front

What are the two components that a vector quantity must have?

Back

Magnitude and Direction.

Front

What is the definition of drag force?

Back

Drag force is the resistance force caused by the motion of a body through a fluid (like air or water).

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of a rolling object on a surface.

Front

What is the difference between contact and non-contact forces?

Back

Contact forces require physical interaction, while non-contact forces act at a distance (e.g., gravitational force).

Front

What is an example of a non-contact force?

Back

Gravity is an example of a non-contact force.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces result in a change in motion, causing an object to accelerate.

Front

What is the formula for calculating net force?

Back

Net force = mass x acceleration (F = ma).