Forces and 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 more inertia: a truck or an ant?

Back

A truck has more inertia than an ant because it has more mass.

Front

What is Friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact.

Front

Why is it harder to move down a hill due to friction?

Back

Friction between the boy and the hill resists his motion, making it harder to move down.

Front

What is Net Force?

Back

Net force is the total force acting on an object after all the individual forces are combined.

Front

If one team pulls with 200N and another with 150N, what is the net force?

Back

The net force is 50N to the left.

Front

What is a Balanced Force?

Back

A balanced force occurs when two forces acting on an object are equal in size and opposite in direction, resulting in no net force.

Front

What happens when you push on a stationary object?

Back

If you push on a stationary object, it exerts an equal and opposite force back on you, according to Newton's Third Law.

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 a net external force.

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).