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Solve! - Kinematics - JEE Main

A projectile fired with initial velocity v at an angle \theta. If initial velocity be tripled at the same angle of projection, then time of ascent will become 

  • Option 1)

    Thrice

  • Option 2)

    9 times

  • Option 3)

    one third

  • Option 4)

    \frac{1}{9}^{th} times

 
Answers (1)
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S safeer

T_{ascent} = \frac{u\sin\theta}{g} \Rightarrow T_{ascent}\;\alpha\;u

Therefore when u becomes 3u, time of ascent also becomes three times. i.e thrice

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