NEET Class neet Answered
The ceiling of a long hall is 25 m high . What is the maximum horizontal distance that a ball thrown with a speed of 40 m / s can go without hitting the ceiling of the hall ? ( g = 10 m / s2 )
Asked by monikalakhara.1995 | 26 Jun, 2021, 08:30: PM
Expert Answer
Maximum height h reached by ball is determined from the following equation
......................(1)
where u = 40 m/s is initial projection speed , α is angle of projection and g is acceleration due to gravity
From eqn.(1) , we get angle of projection α as follows
Hence angle of projection α = sin-1 (0.559 ) = 34o
Maximum Range R is determined from following equation
Answered by Thiyagarajan K | 26 Jun, 2021, 09:17: PM
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