Physics Midterm Review

Which of the following is an area of physics that deals with the behavior of light?

• Mechanics

• Thermodynamics

• Optics

• Relativity

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The SI unit for force is the

• Newton

• Watt

• Joule

• Kilogram

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If you were to drop a bowling ball and a tennis ball from a height of 200 meters in a vacuum, which would fall faster?

• the bowling ball

• the tennis ball

• they would both fall at the same speed

• objects do not fall in a vacuum

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A proposed explanation for a phenomenon that can be experimentally tested is a(n)

• Estimation

• Simulation

• Hypothesis

• Conclusion

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Why do physicists use models?

• to explain the basic features of complex phenomena

• to explain the complex features of simple phenomena

• to describe all aspects of a phenomenon

• to describe all of reality

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How long will it take Marcus to run 720 meters at a speed of 5 meters per second?

• 100 seconds

• 125 seconds

• 144 seconds

• 182 seconds

A bicyclist travels along a straight path at a constant speed. His acceleration is equal to

• his displacement

• the elapsed time

• -9.81 m/s²

• zero

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An object has a negative velocity and a negative acceleration. That object will

• speed up

• slow down

• turn around

• immediately stop

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Calculate the final velocity of a skateboarder who accelerates from rest for 8 seconds down a ramp at an acceleration of 4 m/s².

• 20 m/s

• 24 m/s

• 32 m/s

• 36 m/s

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To find the resultant of two perpendicular vectors, you need to use

• The Bernoulli Equation

• Tangent Function and Quadratic Formula

• Cosine and Sine Functions

• Pythagorean Theorem and Inverse Tangent