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An athIete covers a circuIar path of rad...

An athIete covers a circuIar path of radius 70 m in 55 s and returns to the starting point. Find the magnitude of his aevrage speed and averge velocity. If he compIetes the Iast 40 m of the path at the same rate in 4 s, find the vaIue of instantaneous speed and velocity in that intervaI of time.

Text Solution

Verified by Experts

The correct Answer is:
`8 "m.s"^(-1), 0; 10 "m.s"^(-1),10 "m.s"^(-1)`
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Knowledge Check

  • A body is thrown vertically upwards at 40 "m.s"^(-1) . After sometime the body returns to the initial point at the same speed. Average velocity of the body for the motion is

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    D
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    B
    `2v_0/(Ralpha)`
    C
    `v_0/(2Ralpha)`
    D
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