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Question

If g is acceleration due to gravity, then the vertical distance travelled by a projectile in time t is equal to.

A
12gt2
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B
gt2
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C
34gt2
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D
none of these
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Solution

The correct option is A 12gt2
Initial speed of the projectile in vertical direction is zero i.e. uy=0
Acceleration in the vertical direction ay=g
Vertical distance travelled Sy=uyt+12ayt2
Sy=0+12gt2
Sy=12gt2

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