Which represents the velocity as a function of time for a ball which is dropped (consider only the time until just before it hits the ground)?
A. 
B. 
C. 
D. 
The velocity is increasing and negative, thus C is the correct choice.
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At position A within a tube containing fluid that is moving with steady laminar flow, the speed of the fluid is 12.0 m/s and the tube has a diameter 12.00 cm
At position B, the speed of the fluid is 18.0 m/s and the tube has a diameter 6.00 cm. What is the ratio of the density of the fluid at position A to the density of the fluid at position B? A) 3.00 B) 0.167 C) 0.375 D) 0.333 E) 0.750
The quantity volt is equivalent to which of the following?
a. J/C c. J×C b. C/W d. J×m
Absolute visual magnitude is calculated at a standard distance of ____
a. one light year b. one parsec c. 10 light years d. 10 parsecs e. 100 parsecs
Light from distant stars that must pass through dust arrives bluer than when it left its star
Indicate whether the statement is true or false