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A camera is accidentally knocked off an ...

A camera is accidentally knocked off an edge of a cliff 400 ft high. The camera falls a distance of `s=16t^(2)` in t seconds.
(i) How long does the camera fall before it hits the ground ?
(ii) What is the average velocity with which the camera falls during the last 2 seconds ?
(iii) What is the instantaneous velocity of the camera when it hits the ground ?

Text Solution

Verified by Experts

The correct Answer is:
`(i) 5sec` `(ii) 128` ft/s `(iii) 160` ft/s
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