How do forces make things in the universe move and interact?

What is a force?

• A push or a pull that can make things move or change how they are moving.

• A type of energy that can only slow things down.

• A magnetic field that only attracts metals.

• A gravitational pull that only affects planets.

What does Newton's first law of motion state?

• An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on it.

• The amount of force needed to move an object depends on its mass.

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

• Forces can only be balanced or unbalanced.

Which of the following is an example of an unbalanced force?

• A box being pushed by two people from opposite sides with different forces.

• A book resting on a table.

• A car parked on a flat road.

• A ball sitting still on the ground.

What is the role of gravity according to the passage?

• It pulls everything towards the Earth.

• It pushes objects away from the Earth.

• It only affects objects in space.

• It only works on living organisms.

How does Newton's second law relate force and mass?

• The amount of force needed to move an object depends on its mass.

• Mass does not affect the force needed to move an object.

• Force and mass are unrelated.

• Mass is the only factor in determining force.

What happens when forces are balanced?

• The object doesn't move.

• The object accelerates rapidly.

• The object changes direction.

• The object explodes.

What is an example of Newton's third law of motion?

• A rocket launching into space.

• A car stopping at a red light.

• A book falling off a shelf.

• A person sitting in a chair.