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A stone is tied to a string and swings w...

A stone is tied to a string and swings with uniform motion in a horizontal circle. The string breaks and at a time t, the stone is displaced `Deltar=3 hat(i)+4hat(j)-5hat(k)` metres. (The positive z-axis is vertically up) Select the correct alternative.

A

the time t is 1 s

B

the time t is 0.5 s

C

the speed of the stone while in circular motion is 5 m/s

D

the speed of the stone while in circular motion is `5 sqrt(2)m//s`

Text Solution

Verified by Experts

The correct Answer is:
A, C
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