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A particle is projected vertically upwar...

A particle is projected vertically upward. Its height `'h'` at time `'t'` has the relation `h=60t-16t^2`. The velocity at which it hits the ground is

A

60

B

30

C

90

D

180

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-APPLICATIONS OF DIFFERENTIATION-EXERCISE 1C (RATE OF CHANGE)
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