1.

The position of a particle which is confined to move along a straight line is S = 4t3 – 32t + 100, where S is measured in meters and t in seconds. The time required for the particle to reach a velocity of 76 m/s from its initial condition at t = 0 is:

A. 12 sec
B. 4 sec
C. 3 sec
D. 9 sec
Answer» D. 9 sec


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