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The instantaneous speed is always equal ...

The instantaneous speed is always equal to the magnitude of instantaneous velocity. Why?

A

The displacement in time T must always take non-negative values

B

The displacement x in time T satisfies `-v_(0) T lt x lt v_(0)T`

C

The accleration is always a non-negative number

D

The motion has no turning points

Text Solution

Verified by Experts

The correct Answer is:
B
For maximum and minimum displacement we have to keep in mind the magnitude and direction of maximum velocity.
As maximum velocity in positive direction is `v _(0)` maximum velocity in opposite direction is also `v_(0)` .
Maximum displacement in one direction `= v_(0)T`
Maximum displacement in opposite directions `= -v_(0)T`
Hence, `-v_(0)T lt x lt v_(0)T`
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