Module 4 Forces in One Dimension

The law of inertia applies to

• objects at rest.

• moving objects.

• both moving and nonmoving objects.

Compared to its weight on Earth, a 10-kg object on the moon will weigh

• the same amount.

• less.

• more.

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Compared to its mass on Earth, the mass of a 10-kg object on the moon is

• the same.

• more.

• less.

The mass of a sheep that weighs 110 N is about

• 1.0 kg.

• 11 kg.

• 110 kg.

• 1100 kg.

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A 15-N force and a 45-N force act on an object in opposite directions. What is the net force on the object?

• 15 N

• 30 N

• 45 N

• 60 N

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How much does a 3.0-kg bag of bolts weigh?

• 7.2 N

• 14.4 N

• 22.8 N

• 29.4 N

A 5-N force and a 30-N force act in the same direction on an object. What is the net force on the object?

• 5 N

• 25 N

• 30 N

• 35 N

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Accelerations are produced by

• forces.

• velocities.

• accelerations.

• masses.

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When an object reaches terminal velocity its acceleration is

• 0 m/s².

• 4.9 m/s².

• 9.8 m/s².

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NGSS.MS-PS2-2

A heavy person and a light person parachute together and wear the same size parachutes. Assuming they open their parachutes at the same time, which person reaches the ground first?

• the light person

• the heavy person

• Neither -- they both reach the ground together.

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