Newton's Laws of Motion

Front

What pulls a ball back to earth?

Back

Gravity is the force that pulls objects toward each other, and it pulls a ball back to Earth.

Front

An unbalanced force will cause an object at rest to start moving. True or False?

Back

True. An unbalanced force acting on an object will cause it to accelerate, which can include starting to move.

Front

Which is always a contact force?

Back

Friction is always a contact force, as it occurs when two surfaces are in contact with each other.

Front

When an object is in circular motion, it is constantly accelerating. True or False?

Back

True. An object in circular motion is constantly changing direction, which means it is accelerating.

Front

The measure of the pull of gravity on an object is ___________________.

Back

Weight. Weight is the force of gravity acting on an object's mass.

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 at a constant velocity 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 is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × acceleration due to gravity (g).

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.