Questions
A projectile is fired horizontally with a velocity 20m/sec from the top of a hill of high 490m. The time taken by the body to reach ground (g=9.8 m/s2)
detailed solution
Correct option is B
equation of motion vertically=Sy=Uyt+12gyt2 490=12(9.8)t2time of flight=t=2(490)9.8=10secTalk to our academic expert!
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