A player kicks a football with an initial speed of 25   m   s - 1 at an angle of 45 ° from…

A player kicks a football with an initial speed of 25 m s-1 at an angle of 45° from the ground. What are the maximum height and the time taken by the football to reach at the highest point during motion? (Take g=10 m s-2)
  1. hmax=15.625 m, T=1.77 s
  2. hmax=3.54 m, T=0.125 s
  3. hmax=10 m, T=2.5 s
  4. hmax=15.625 m, T=3.54 s

Solution

θ=45°

H=u2sin2θ2g=(25)2×122×10=1258 m

and time t=T2

=usinθg=251210=25102=522s

Asked in: JEE Main 2021 (27 Aug Shift 2)

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