111 - Kinematics Questions Answers

The velocity of a particle is defined by Vx=100-t^(3/2) and Vy=100+10t-2t^(2) Where V is in m/sec and t is in seconds. The radius of curvature at the top of its path is?

Asked By: DEN
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Asked By: RAM KUMAR
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Asked By: RAM KUMAR
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Asked By: VARUN RAJ
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Can you find the ans numerically 
Asked By: LUFFY
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Two balls A and B are simultaneously released on two frictionless inclined planes from the position shown. The inclined planes have equal inclinations. The balls pass through a particular horizontal level 12s and 4s after they were released. How long after they were released will they be closest to each other?

Asked By: MUDIT
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Question in based on a figure, yet it is not provided. 

Please update it for getting the solution.

Thanks

 

 A projectile is fired with velocity u at entrance A of a horizontal tunnel of length L and height H. The minimum value of u for which projectile will reach the other end of the tunnel without touching the top of the tunnel is 

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sir please explain how to do this one
Asked By: MEHUL
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 At t = 0, a stone is dropped into a well in which the level of water is h below the top of the well. If v is velocity of sound, the time T measured from t = 0, after which the splash is heard is given by ?

 

Asked By: PREM
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By h=ut+12at2, time of downward journey can be calculated then h/v is the time for upward journey of sound now solve

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