Unit 2 Bell Work Review

What is the velocity of a car that drove 60 km East in 3 hours?

• 10 km/hr

• 10 km/hr East

• 20 km/hr

• 20 km/hr East

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3 m/s north is an example of a(n) _____.

• Acceleration

• Speed

• Time

• Velocity

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Motion is a change in _____.

• Position

• Speed

• Time

• Velocity

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A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant _____.

• Acceleration

• Distance

• Speed

• Velocity

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The speed you read on a speedometer is ____.

• Average speed

• Constant speed

• Instantaneous speed

• Velocity

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If you are in a moving car, which of the following would you use as a reference point to show motion?

• A tree outside

• The driver

• The windshield

• Your shoes

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What does Newton's First Law state?

• Object’s at rest will stay at rest and object’s in motion will stay in motion unless a balanced force acts on them

• Object’s at rest will stay in motion and object’s in motion will stay at rest unless an unbalanced force acts on them

• Objects at rest will stay at rest and object’s in motion will stay in motion unless an unbalanced force acts on them

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If a car is moving 50 mi/hr and travels 30 miles, how long did the journey take?

• 0.6 hours

• 1.5 hours

• 2 hours

• 3 hours

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If the mass of an object doubles and its velocity remains constant, what happens to its momentum?

• It doubles

• It halves

• It quadruples

• It remains the same

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A motorcycle accelerates from a standstill to 80 km/s in 4 s. What is its acceleration in km/s²? (Do not include units in your answer)

Mathematical Equivalence

ON

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