PSC 1121 Final exam study guide || A+ Verified Solutions.
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Course
PSC 1121
Institution
PSC 1121
How do velocity and acceleration differ?
A. They are the same thing.
B. Velocity has direction but acceleration does not.
C. Acceleration is the rate of change of velocity, while velocity is the rate of change of displacement.
D. Average acceleration can be measured but average veloci...
PSC 1121 Final exam study guide || A+ Verified Solutions.
How do velocity and acceleration differ?
A. They are the same thing.
B. Velocity has direction but acceleration does not.
C. Acceleration is the rate of change of velocity, while velocity is the rate of change of
displacement.
D. Average acceleration can be measured but average velocity cannot.
E. Velocity is the rate at which acceleration changes. correct answers C. Acceleration is the rate
of change of velocity, while velocity is the rate of change of displacement.
How much is a milli-millimeter?
A. a millimeter
B. a micrometer
C. a kilometer
D. a meter correct answers C. a kilometer
If you throw a tennis ball vertically upward, during the time it is in the air, is its speed ever zero?
Is its acceleration ever zero?
A. Yes; no
B. yes; yes
C. no; yes
D. no; no correct answers A. Yes; no
The relations of units in the British system of units are arbitrary.The relations of units in the
International System of units have a simple pattern.
A. True. false.
B. False. true.
C. false. false.
D. true. true. correct answers D. true. true.
An object is dropped from a height. How much distance has it travelled after 2 s? (Select the
answer which is within a meter.)
A. 3 meters
B. none of the above
C. 80 meters
D. 20 meters
, E. 6 meters correct answers D. 20 meters
An object is dropped from a height. How much distance has it travelled after 3 s? (Select the
answer which is within a meter.)
A. 3 meters
B. 6 meters
C. 50 meters
D. 20 meters
E. none of the above correct answers E. none of the above
There are three Newton's laws. There are three Kepler's laws.
A. true. true.
B. true. false.
C. false. true.
D. false. false. correct answers A. true. true.
Which of the following quantities is not a vector?
A. force
B. velocity
C. position
D. acceleration
E. speed correct answers E. speed
A force of 100 newtons is applied on an object which has a mass of 20 kg.
A. The object will accelerate at a rate of 100 m/s2.
B. The object will acquire a velocity of 5 m/s.
C. None of the above is true.
D. The object will accelerate at a rate of 5 m/s2.
E. The object will acquire a speed of 5 m/s. correct answers D. The object will accelerate at a
rate of 5 m/s2.
Choose Newton's universal law of gravity.
A. F = m a
B. F = G m1 m2 / r
C. F = G m1 m2 / r2
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