Forces and Motion

What is air resistance?

• Force that increases the speed of an object through the air.

• Force that opposes the motion of an object through the air

• Force that attracts objects to the ground.

• Force that causes objects to float in the air.

What is force?

• Force is a measure of the amount of matter in an object.

• Force is a physical quantity that can change the state of motion or shape of an object.

• Force is a form of energy that can be created or destroyed.

• Force is a mental concept that does not have any physical existence.

What is gravity?

• Gravity is a force that only affects large objects.

• Gravity is a force that attracts objects towards each other.

• Gravity is a force that repels objects away from each other.

• Gravity is a force that is caused by magnetism.

Which force causes a ball to fall to the ground?

• friction

• magnetism

• electricity

• gravity

What happens to the air resistance when an object moves faster?

• The air resistance stays the same.

• The air resistance increases.

• The air resistance decreases.

• The air resistance becomes zero.

Which force keeps the planets in orbit around the Sun?

• gravitational force

• magnetic force

• electromagnetic force

• centrifugal force

What is the SI unit of force?

• Kilogram (kg)

• Meter (m)

• Newton (N)

• Second (s)

Which force is responsible for the weight of an object?

• gravity

• electricity

• magnetism

• friction

What force is used when opening a door towards you?

• Pull

• Push

• Twist

• Gravity

Which force causes a parachute to slow down the fall?

• gravity

• friction

• magnetic force

• air resistance