Force, Friction and Gravity

Front

What is force?

Back

Force is a push or pull on an object that can cause it to start moving, stop moving, speed up, or slow down.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, causing it to slow down or stop.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, such as the force that pulls objects toward the Earth.

Front

Which car requires the most force to start moving: a car with mass of 1200 kg, 1500 kg, 1700 kg, or 2000 kg?

Back

The car with mass of 2000 kilograms requires the most force to start moving.

Front

What happens to a moving object when friction acts on it?

Back

Friction slows down the moving object and can eventually stop it.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the more force is required to move it.

Front

What is an example of gravity in action?

Back

An example of gravity is a ball falling to the ground when dropped.

Front

How does friction affect a hockey puck on ice?

Back

Friction between the puck and the ice slows the puck down, which can prevent it from reaching the goal.

Front

What is the effect of gravity on falling objects?

Back

Gravity causes all objects to fall at the same rate, regardless of their mass, when air resistance is negligible.

Front

What is the role of force in starting motion?

Back

Force is needed to overcome inertia and start an object moving from rest.