Forces and Motion

A force acts on an object and causes them to move. Which of the following is NOT an example of force causing motion?

• A spinning propeller on a plane

• Turning the pedals of a bike

• Hammering a nail into wood

• A lamp sitting on a desk

Which of the following correctly explains the relationship between force and motion?

• If something is moving, no force was applied to it.

• The greater the force, the greater the change in motion.

• The more force applied to something, the less it moves.

• The smaller the force, the greater the motion.

Which of the following objects represents elastic potential energy?

• Bow and Diver

• Spring and Bow

• Diver and Battery

• Battery and Spring

Mariah is pedaling her bike very fast. She suddenly takes her feet off of the pedals. Which statement describes the motion of the pedals immediately after removing her feet?

• The pedals stop instantly due to the friction of the tires.

• The pedals begin to move backwards at the same speed

• The pedals move in the same direction but start to slow down

• The pedals move at the same speed, but begin to move faster.

Which of the following represents an object in motion?

• A lamp sitting on a table.

• A book resting on a shelf.

• A pencil lying on the desk.

• A coin dropping to the floor.,

Which of the following describes an object in motion?

• Object's mass increases

• Object's position changes

• Object's temperature decreases

• Object's volume changes

Which of the following works by using the energy of motion?

• Flashlight

• Bicycle

• Sun

• Radio

Which of the following is not an object in motion?

• A bird sitting on a perch.

• People surfing on waves.

• A man riding a bicycle.

• A girl hitting a volleyball.

What must happen in order for a person to lift an object?

• The force of gravity must be greater than the mass of an object

• The mass of the object must be greater than the upward pull or push on the object

• The mass of the object must be greater than the pull of gravity

• The upward push or pull on the object must be greater than the force of gravity.

An object is moving at a constant speed. If a balanced force is applied in the opposite direction the object is moving, what will most likely happen?

• The object will speed up

• The object will change directions

• The object will continue to move at a constant speed

• The object will slow down and eventually stop moving