Which force produces a change in motion?

• Unbalanced force

• Balanced force

• Gravitational force

• Frictional force

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According to Newton's Second Law, if you increase the force applied to an object:

• It accelerates more
• It doesn't move
• You get more inertia
• It decelerates

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What Newton's law does this picture represent?

• Force equals mass times acceleration

• Newton's law of inertia

• Every action has an equal and opposite reaction

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If an object is stationary (not moving) the forces acting upon it are---

• Balanced
• Unbalanced
• Weak
• Hulk Smash?

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A car speeding up, a dog slowing down and person turning around the block are examples of..

• Balanced Forces
• Unbalanced Forces

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When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

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A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

• Law of inertia

• Law of F=ma

• Law of Reaction

It is much more difficult to move a dresser full of clothes than an empty dresser.

• Law of Inertia

• Law of F=ma

• Law of Reaction (Force-Pairs)

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NGSS.MS-PS2-2

A skateboarder pushes the ground BACKWARDS which causes the board to move FORWARD.

• Law of Inertia

• Law of F=ma

• Law of reaction (force pairs)

Which example best illustrates Newton's Third Law of Motion?

• When a glass slid across a table, it spilled water when it stopped suddenly.

• An engine used less work to move a lighter car than when it moved a heavier car.

• When you sit on a chair, your body exerts a downward force on the surface of the chair, while the chair exerts an equal and upward force on your body.

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