Balanced & Unbalanced Forces

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Forces that are not equal and opposite, causing a change in motion.

Front

What happens to an object when balanced forces act on it?

Back

It stays still or moves at a constant speed and direction.

Front

What happens to an object when unbalanced forces act on it?

Back

It accelerates, decelerates, or changes direction.

Front

Give an example of balanced forces in everyday life.

Back

A book resting on a table, where gravity pulls it down and the table pushes it up.

Front

Give an example of unbalanced forces in everyday life.

Back

A marble rolling down a ramp, where gravity pulls it down and no opposing force is equal.

Front

What is the effect of balanced forces on a moving plane?

Back

The plane moves at a constant speed in a straight line.

Front

What is the effect of unbalanced forces on a bike rider?

Back

The bike rider can speed up, slow down, or change direction.

Front

Why does a chair remain stationary on the floor?

Back

The forces acting on it are balanced, with gravity pulling down and the floor pushing up.

Front

What force acts on a ball rolling across the floor?

Back

Friction acts in the opposite direction, creating an unbalanced force.