Conceptual Physics Chapter 6

Objects move only when force is exerted.

• True

• False

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NGSS.MS-PS2-2

The acceleration of an object is inversely proportional to the net force acting on it.

• True

• False

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NGSS.MS-PS2-2

Air resistance is caused by friction between the air and an object moving through the air.

• True

• False

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NGSS.MS-PS2-2

Pressure is defined as the force one object exerts on another object.

• True

• False

The speed of an object dropped in air will continue to increase without limit until it strikes the ground.

• True

• False

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NGSS.MS-PS3-1

The acceleration produced by a net force on an object is

• directly proportional to the magnitude of the net force.

• in the same direction as the net force

• inversely proportional to the mass of an object

• all of the above

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NGSS.MS-PS2-2

If the force acting on a cart doubles, what happens to the cart's acceleration?

• it quadruples

• it doubles

• it halves

• it quarters

Tags

NGSS.MS-PS2-2

A girl whose weight is 200 N hangs from a bar supported by two strands of rope. What is the tension from each strand?

• 400N

• 300N

• 200N

• 100N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Pressure is defined as

• distance per unit time

• force per unit time

• force per unit area

• velocity per unit time

Which of the following would exert the most pressure on the ground?

• A woman standing in running shoes

• A woman standing in high heel shoes

• A woman standing on skis