Short Force and Motion Review

Front

What pulls all objects toward the center of the Earth?

Back

Gravity is the force that pulls all objects toward the center of the Earth.

Front

What is the net force when two forces of 60 N act in opposite directions?

Back

The net force is 60 N in the direction of the stronger force.

Front

What type of force is acting on books sitting on a shelf?

Back

The forces are balanced, meaning the weight of the books is equal to the support force from the shelf.

Front

What type of force is acting on a parked car?

Back

The forces are balanced, meaning the weight of the car is equal to the support force from the ground.

Front

What type of force is acting on a football that is increasing speed as it goes through the goal posts?

Back

The forces are unbalanced, meaning there is a net force acting on the football.

Front

Define friction.

Back

Friction is the force that opposes the motion of an object when it is in contact with another surface.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its velocity.

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a).