1) Forces that are equal in size and opposite in direction, resulting in no change in motion. a) Newtons b) Speed c) Friction d) Balanced Forces 2) The unit for force a) m/s b) hertz c) Newtons N d) joules 3) A push or a pull on an object. a) Tension b) Force c) Friction d) Pull Force 4) Forces that cause a change in an object’s motion because they do not cancel out. a) Unbalanced Forces b) Balanced Forces c) Force d) Net Force 5) The force that causes a moving object to slow down when it touches another object a) Friction b) Force c) Applied force d) Unbalanced Forces 6) A way of measuring how quickly something is moving or being done. a) Acceleration b) Velocity c) Speed d) Density 7) The rate at which an object changes position or moves in a SPECIFIC direction a) Velocity b) Magnitude c) Acceleration d) Speed 8) The rate at which an object CHANGES its speed or direction a) Speed b) Acceleration c) Force d) Velocity 9) A force that is applied to an object by a person or another object a) Net Force b) Applied force c) Newtons N d) Force 10) A combination of all forces on an object a) Sum Force b) Net Force c) Combined force 11) The tendency of an object to resist a change in motion; directly related to mass. a) Inertia b) Friction c) Air Drag d) Velocity 12) The force exerted by a surface that supports the weight of an object resting on it. a) Basic Force b) Normal Force  c) Regular Force d) Rest Force 13) Would this car be speeding up or slowing down? a) speeding up b) slowing down 14) Why is it harder to slide a heavy box across a carpet than across a smooth tile floor? a) Air Resistance b) Gravity c) Friction d) Acceleration 15) Why don’t you fall through the floor even though gravity is pulling you down? a) Floor Force b) Normal Force c) Gravity Force d) Dark Force 16) When you step off a boat onto a dock, why does the boat move backward? a) Law of Inertia b) Action-Reaction Forces 17) If you push a shopping cart with more force, how does its acceleration change? a) it increases b) it decreases 18) What is the net force? a) 3 N right b) 3 N left c) 17 N right d) 17 N left 19) What is the net force acting on the object? a) 5 N right b) 5 N left c) 15 N right d) 10 N left 20) Which object has more inertia? a) Earth b) the moon c) an elephant d) a building

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