Forces Test Review

Front

What is the force that acts on an object lying on a surface, acting in a direction perpendicular to the surface?

Back

Normal force.

Front

Which law states that for every action, there is an equal and opposite reaction?

Back

Newton’s 3rd Law of Motion.

Front

What is the correct unit for measuring force?

Back

Newton (N).

Front

In a balloon rocket, which law is demonstrated when the balloon pushes air backward and the air pushes the balloon forward?

Back

Newton's 3rd Law of Motion.

Front

How do you calculate the force of friction (F_F)?

Back

F_F = μ * N, where μ is the coefficient of friction and N is the normal force.

Front

What is the definition of force?

Back

A push or pull on an object resulting from its interaction with another object.

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 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 the formula for calculating weight?

Back

Weight (W) = mass (m) * gravitational acceleration (g).

Front

What is the gravitational acceleration on Earth?

Back

Approximately 9.81 m/s².