Forces and Friction

What is the definition of force?

• The amount of matter in an object

• A push, pull or twist that may change an object’s motion or shape

• The unit of measurement used to measure mass

• The force exerted on an object due to gravity

What is the unit of measurement used to measure mass?

• Newton

• Kilogram

• Force

• Weight

What is the force exerted on an object due to gravity called?

• Mass

• Newton

• Weight

• Force

What is the definition of balanced force?

• When the forces acting on an object do not cancel each other out

• A force that opposes motion, causes wear and heat

• When all the forces acting on an object cancel each other out

• Moving faster as a result of an unbalanced force being applied

What is the role of a lubricant?

• To increase friction between two surfaces

• To reduce friction between two surfaces

• To measure force

• To change an object’s motion

What is streamlining?

• The pivot point of a lever

• A force that opposes motion

• Process of shaping an object to reduce air or water resistance when it moves

• The amount of energy used when a force moves an object over a distance

What is the definition of acceleration?

• The amount of matter in an object

• Moving faster as a result of an unbalanced force being applied

• The pivot point of a lever

• A force that is moved by the simple machine

What is a fulcrum?

• The pivot point of a lever

• A force that opposes motion

• The amount of energy used when a force moves an object over a distance

• An object or device that makes work easier

What is a force?

• A type of energy

• A push, pull, or twist

• A form of matter

• A type of sound

Which of the following is NOT something forces can do to objects?

• Begin to move

• Change color

• Change direction

• Change shape