Exam 1: The Study of Motion

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When a body moves in circular motion at constant speed,the velocity and acceleration point __________.

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perpendicular to each other

The proper abbreviation for 'kilohertz' is 'kHz.'

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True

An aircraft undergoes a constant acceleration of 11 m/s2 for 12 seconds.The distance traveled is __________.

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792 m

A racecar driver steps on the gas,changing his speed from 10 m/s to 30 m/s in 4 seconds.The acceleration of the racecar is _________.

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How many megabytes are there in a gigabyte?

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A ball thrown upwards reaches a maximum height and then comes back down to the original level. -At the peak of the motion,the velocity is __________ and the acceleration points __________.

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When a body moves in circular motion at constant speed the velocity and acceleration point in opposite directions.

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Which of these are metric units?

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What is the proper abbreviation for 'grams?'

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What is the period of a signal that has a frequency of 60 Hz?

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A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2. The ball is referred to at the two-second time. -The distance the ball is below the rooftop in meters is

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The slope of a velocity vs.time graph is the acceleration.

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The figure shows the distance versus time graph of an object. The figure shows the distance versus time graph of an object.   -The acceleration of the moving object is -The acceleration of the moving object is

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Match each item with the correct statement below. -metric prefix that means one thousand

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The figure shows a distance versus time graph for an object. The figure shows a distance versus time graph for an object.   -The acceleration of the moving object is a non-zero constant. -The acceleration of the moving object is a non-zero constant.

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Which of these are units of measure?

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The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it starts to roll. -The acceleration after starting from rest is __________.

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A race car goes around a curve at 50 m/s.The radius of the curve is 400 m.What is the car's acceleration?

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The slope of a distance vs.time graph is the __________.

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A racecar driver steps on the gas,and his racecar travels 20 meters in 2 seconds starting from rest.The acceleration of the racecar is

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