Physics 221

An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4m/s^2. Its average velocity as it goes from x=2m to x=8m is:

A. 1m/s
B. 2m/s
C. 3m/s
D. 5m/s
E. 6m/s

An object is released from rest and falls a distance H during the first second of time. How far will it fall during the next secondof time?

A. H
B. 2H
C. 3H
D. 4H
E. H^2

If an abject has a constatn acceleration of 3m/s^2. The displacement versus time graph for this object has a slope:?

A. that increases with time
B. that is constant
C. that decreases with time
D. of 3 m/s
E. of 3 m/s^2

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  1. What is your thinking on these? I am not much inclined to do them for you, but will be happy to critique thinking.

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