TEST: Force & Laws 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 a net external force.

Front

What is Newton's 2nd 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 Newton's 3rd Law of Motion?

Back

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

Front

Define force in physics.

Back

A push or pull on an object resulting from the object's interaction with another object.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N).

Front

What does a flat line on a distance-time graph indicate?

Back

The object is at rest and has zero velocity.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

How do you calculate the resultant force?

Back

By vector addition of all individual forces acting on an object.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.