Unit Test — Unit test Answers
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An object is represented by the dot on the motion map.
A
a satellite in orbit around a moonB
a child on a swing that just stoppedC
a ball twirled on a string that just brokeD
a car driving around a curve22
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A
gravityB
inertiaC
centripetal forceD
centrifugal force23
Quinn is testing the motion of two projectiles x and y by shooting them from a sling shot. What can we say best describes the motion of the projectiles ? Assume air resistance is not a factor
A
The horizontal velocity of projectile X is changing, and the vertical velocity of projectile Y is constant.B
The vertical velocity of projectile Y is changing, and the horizontal velocity of projectile X is constant.C
The horizontal acceleration of projectile X is –9.8 m/s2, and the vertical acceleration of projectile Y is 0 m/s2.D
The horizontal acceleration of projectile Y is –9.8 m/s2, and the vertical acceleration of projectile Y is 0 m/s2.24
Dewayne reviews Kepler’s laws by making the table shown. Which label belongs in each cell of the table?
A
W: FirstX: SecondY: ThirdB
W: ThirdX: SecondY: FirstC
W: ThirdX: FirstY: SecondD
W: SecondX: ThirdY: First25
In which situation would a space probe most likely experience centripetal acceleration?
A
as it revolves around a planetB
as it flies straight past a moonC
as it is pulled in a line toward the SunD
as it lifts off from EarthDid you find these answers helpful?
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