Force and Motion Review

When a car drives by, we know it is in motion because we use a ______________.

• ruler
• car
• frame of reference

• point of contact

Tug of war is an example of what kind of force.

• typical force
• normal force
• balanced force
• direct force

To make an object move you must first apply ---

• an opposing force

• an unbalanced force

• a stationary force

• a vertical force

a force is best defined as ---

• the application of weight

• a push or pull that is exerted on matter

• the flow of electric charges

• a bond in which electrons are shared

A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --

• 0 N of force

• less than 20 N of force

• 20 N of force

• more than 20 N of force

Which change would require more force to pull the wooden block up the ramp?

• Have the student use two hands

• Reduce the mass of the wooden block.

• Restack the books so the thinnest book is on the bottom.

• Glue sandpaper to the surface of the ramp.

Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?

• He was riding in the last car of the train.

• He had heat exhaustion from the overcrowded train.

• Oliver's body resisted a change in the subway train's inertia.

• Oliver's body was responding to the force of gravity.

Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by an unbalanced force?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Law of Universal Gravitation

Which law explains the relationship among mass, force and acceleration?

• Universal Law of Gavitation

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.

force = mass x acceleration

Which object would have the greatest force?

• A 5 kg object accelerating at 10 m/s

• A 5 kg object accelerating at 20 m/s

• a 20 kg object accelerating at 4 m/s

• a 20 kg object accelerating at 3 m/s