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8. | The displacement of the body is given to be proportional to the cube of time elapsed. The magnitude of acceleration of body is? | |
A. | Increasing with time | |
B. | Decreasing with time | |
C. | Constant but not zero | |
D. | Zero | |
Answer: Option A | |
Explanation: | |
s=kt3 Velocity=ds/dt=3kt2 Acceleration=dv/dt=6kt Clearly acceleration increases uniformly with time. |
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