CfU - Newton's 3 Laws of Motion

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it possesses.

Front

Which object has the most inertia: Car, Bicycle, Skateboard, or School Bus?

Back

School Bus.

Front

What does Newton's 1st Law of Motion state?

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 a net external force.

Front

How does a magician pull a tablecloth without disturbing the dishes?

Back

This demonstrates Newton's 1st Law of Motion, as the dishes remain at rest due to their inertia.

Front

What does Newton's 2nd Law of Motion state?

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

If the same force is applied to two objects of the same mass, what can be said about their acceleration?

Back

Their acceleration will be the same.

Front

What does Newton's 3rd Law of Motion state?

Back

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

Front

Give an example of Newton's 3rd Law of Motion.

Back

Letting go of a balloon full of air: the balloon pushes air backward and experiences an equal force pushing it forward.

Front

What is the relationship between mass and inertia?

Back

Inertia increases with mass; heavier objects have more inertia and resist changes in motion more than lighter objects.

Front

What is a net force?

Back

Net force is the vector sum of all the forces acting on an object.