Motion and Forces Flashcard 1 Gr 7

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

What is a force?

Back

A force is a push or a pull that can cause an object to move, stop, or change direction.

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Unbalanced forces are forces that are not equal in size and can cause an object to accelerate in the direction of the greater force.

Front

What happens when two forces act in opposite directions and are not equal?

Back

The forces are unbalanced, and the object will move in the direction of the stronger force.

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

If the net force on an object is 3N to the left, what does this indicate?

Back

It indicates that the object will accelerate to the left.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia, meaning it will be harder to change its motion.