An aero plane moving horizontally with a speed of 720 km/h drops a food pocket, while flying at a height of 396.9 m. the time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/sec2)

Question:

Options :

(a) 3 sec and 2000 m
(b) 5 sec and 500 m
(c) 8 sec and 1500 m
d) 9 sec and 1800 m

Answer :

d) 9 sec and 1800 m

Answer Steps :

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Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

If a body is executing simple harmonic motion then

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