Force and Motion

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

• an opposing force

• an unbalanced force

• a stationary force

• a vertical force

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NGSS.MS-PS2-2

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

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NGSS.MS-PS2-1

Which of these would be different for an object if measured on the Earth and on the Moon?

• Mass

• Weight

• Volume

• Density

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NGSS.MS-PS2-4

The diagram below show the forces acting on a soccer ball.

In which of the diagrams will the ball remain motionless?

• W

• X

• Y

• Z

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NGSS.MS-PS2-2

Ana pushed on a big rock in her back yard. She was unable to get it to move because she did not -

• apply enough force

• have a good grip on the rock

• have enough mass

• weigh enough

Tags

NGSS.MS-PS2-2

Many bicycles use a hand brake to control their speed. When the brake is engaged, a rubber pad presses against the tire. What force of motion does the hand brake rely upon to slow the bicycle?

• Gravity

• Friction

• Electricity

• Magnetism

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NGSS.MS-PS2-2

When object is changing position it is called ______.

• Movement

• Motion

• Speed

• Density

This is an example of what type of force?

• Gravitational
• Magnetic
• Electric
• Lightning

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NGSS.MS-PS2-3

This picture is an example of what type of force?

• Gravitational
• Friciton
• Electric
• Magnetic

Tags

NGSS.MS-PS2-4