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A particle is thrown with a velocity of u m/s. It passes A and B as shown in figure at time $t_{1} = 1$ s and $t_{2} = 3$ s' The value of u is

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Correct option is C

If the projectile takes 1 sec to reach A it will take same time 1 sec to come down from B as they are in the same height. So total time of flight is time to reach B and then reach the ground. i.e. 3+1=4 sec.T=2usinθg=4 u=4g2sinθ=40 m/s θ=300

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A particle is thrown with a velocity of u m/s. It passes A and B as shown in figure at time t1=1s and t2=3s' The value of u is

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A particle is thrown with a velocity of u m/s. It passes A and B as shown in figure at time $t_{1} = 1$ s and $t_{2} = 3$ s' The value of u is