Newton’s Laws of Motion

Review Quiz & Study Guide

If an object weighs 463 N but has a mass of 125 kg, which planet is it on?

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1. Venus, 8.8 m/s2

2. Mars, 3.7 m/s2

3. Jupiter, 24.8 m/s2

What is the force applied by the acceleration of a 3.5 kg mass to 7 m/s2?

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1. 2 N2. 24.5 kg●m/s2

3. 0.5 kg ●m/s2

Which has more inertia?

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1. An empty dump truck2. A full dump truck

What velocity does a 10 kg wheelbarrow need to achieve a momentum of 14 kg●m/s?

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1. 1.4 m/s2. 0.714 m/s3. 140 m/s

What type of friction is exhibited by a lubricant?

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1. Sliding2. Rolling3. Fluid4. Air Resistance5. None of the

above

What is the acceleration of a mass of 9 kg applying a force of 36 N?

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1. 4 m/s2

2. 324 m/s2

3. 0.25 m/s2

What mass is required to apply a force of 32 N after an acceleration of 8 m/s2?

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1. 253 kg2. 4 kg3. 0.25 kg

What is the momentum of a 25 kg turkey rolling at 12 m/s?

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1. 2.08 kg●m/s2. 300 kg●m/s3. 0.48 kg●m/s

What acceleration would cause a 12 kg mass to produce a force of 90 kg●m/s2?

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1. 1080 m/s2

2. 0.133 m/s2

3. 7.5 m/s2

What type of friction is exhibited by the wheels on a cart?

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1. Sliding2. Rolling3. Fluid4. Air Resistance5. None of the

above

How much does a 63 kg object weigh in Newtons?

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1. 617 N2. 0.143 N3. 7 N

Which has more inertia?

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1. A freight train2. A cargo plane

What type of friction is exhibited by your fingerprints?

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1. Sliding2. Rolling3. Fluid4. Air Resistance5. None of the

above

If an object weighs 397 N, what is its mass?

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1. 0.02 kg2. 3890.6 kg3. 40.5 kg

You apply a 700 N force on the ground due to weight. Describe the force the ground applies to you.

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1. 700 N, downward2. 700 N, upward3. 350 N, upward4. 350 N, downward

Which has more inertia?

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1. An empty dump truck going 170 km/h

2. A full dump truck sitting on the highway

What is the momentum of an 8 kg bowling ball rolling at 9 m/s?

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1. 0.89 kg●m/s2. 1.13 kg●m/s3. 72 kg●m/s

What type of friction is exhibited by your shoes on the ground?

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1. Sliding2. Rolling3. Fluid4. Air Resistance5. None of the

above

What would the net force be if you throw a wrench in space with a force of 200 N?

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1. 0 N2. 200 N against the throw3. 200 N in the direction of the throw

What force does each swing rope apply?

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1. 845 N, downward2. 845 N, upward3. 422.5 N, upward4. 422.5 N,

downward

TEST TOMORROW• Sir Isaac Newton

– general contributions to science• Newton’s Laws of Motion

– Inertia– F = ma

• Balanced Forces• Net Force

– Action–Reaction Forces

TEST TOMORROW• Gravity

– Distance• Inverse-Square Law

– Mass• Larger mass, larger gravity

• Weight v. Mass– W = mg– g = 9.8 m/s2

TEST TOMORROW• Friction

– Sliding– Rolling– Fluid

• Lubricant• Air resistance

• Momentum– p = mv– Law of Conservation of Momentum