题目内容

If the edge-length of a cube is 2, what is the volume of the cube ? ( )

A. 4
B. 8
C. 16
D. 32

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An object starts from rest with an acceleration of 2.0 m/s2 for 3.0 seconds. It then reduces its acceleration to 1.0 m/s2 for 5.0 additional seconds. The total distance covered is

A. 51.5 m.
B. 38.5 m.
C. 11 m.
D. 9.0 m.
E. 7.6 m.

A graph of x vs t2 is linear, and intercepts the vertical axis at 12m and the horizontal axis at 2s. What is the function? ()

A. x = 12m - (6m/s2)t2
B. x = 12m + (6m/s2)t2
C. x = 12m + (3m/s2)t2
D. x = 12m - (3m/s2)t2
E. x = 6m - (6m/s2)t2

Considering only the horizontal portion of the seats, what is the average surface area of all the seats in a football stadium that seats 100,000 spectators? ()

A. 2*103 m2
B. 5*103 m2
C. 1*103 m2
D. 1*104 m2
E. 2*104 m2

What is the approximate volume of the average adult human body?

A. 0.05 m3
B. 0.1 m3
C. 0.5 m3
D. 1 m3
E. 1.5 m3