Newton's 1st Law of Motion

Front

What is Newton's 1st 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 an unbalanced force.

Front

What is inertia?

Back

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

Front

What happens to a bike traveling at a constant speed in the presence of friction?

Back

The forces acting on the bike are balanced.

Front

True or False: A force is needed to keep an object in motion.

Back

False. An object in motion will continue in motion unless acted upon by an unbalanced force.

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, resulting in a change in motion.

Front

If balanced forces are acting on an object, what will happen?

Back

The object will maintain its current state of motion.

Front

What is the relationship between mass and inertia?

Back

The greater the mass of an object, the greater its inertia.

Front

What does it mean for forces to be not balanced?

Back

It means that the net force acting on an object is not zero, causing the object to accelerate.

Front

What is an example of an object in motion that continues moving due to inertia?

Back

A hockey puck sliding on ice will continue to slide until friction or another force stops it.