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Physics Graph

In: Science

Submitted By kwun
Words 10622
Pages 43
1) When is the average velocity of an object equal to the instantaneous velocity?
A) always
B) never
C) only when the velocity is constant
D) only when the velocity is increasing at a constant rate

2) A new car manufacturer advertises that their car can go "from zero to sixty in 8 s". This is a description of
A) average speed.
B) instantaneous speed.
C) average acceleration.
D) instantaneous acceleration.

3) Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
A) The car is decelerating, and its acceleration is positive.
B) The car is decelerating, and its acceleration is negative.
C) The acceleration is zero.
D) A statement cannot be made using the information given.

4) Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
A) The car is decelerating, and its acceleration is positive.
B) The car is decelerating, and its acceleration is negative.
C) The acceleration is zero.
D) A statement cannot be made using the information given.

5) Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration.
A) The acceleration must be constantly increasing.
B) The acceleration must be constantly decreasing.
C) The acceleration must be a constant non-zero value.
D) The acceleration must be equal to zero.

6) If the velocity of an object is zero, does it mean that the acceleration is zero? Support your answer with an example.
A) no, and an example would be an object starting from rest
B) no, and an example would be an object coming to a stop
C) yes, because of the way in which velocity is defined
D) yes, because of the way in which acceleration is defined

7) Can an object's velocity...

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