When will the velocity of a particle be perpendicular to it's initial velocity? | Projectile Motion
Channel: Puchoto Education
Date: 2020-04-30

When will the velocity of a particle be perpendicular to it's initial velocity?
Find the time after which the velocity of a projectile become perpendicular to its initial velocity.The answer is u/g.sin∅.I want the explanation for it.​Find the time after which the velocity of a projectile become perpendicular to its initial velocity.
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A ball rolls off the edge of a stairway with a horizontal velocity of 1.8m/s. the steps are 0.2m high and 0.2m wide. Which step will the ball hit first?
Question from  Class 11  Chapter Motion In Two Dimension
A ball rolls off the top of a staircase with a horizontal velocity um/s. If the steps are h meter high and b meter wide, the ball will hit the edge of the nth steps, if:
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22. Physics | Kinematics | A Ball Rolling off a Stairway |Learn complete Physics Video Lectures on Kinematics for IIT JEE  This is the most comprehensive website on Physics covering all the topics in detail. No wonder, in its trial run itself, this one of its kind website topped the world ranking on Physics learning. A ball rolls off top of a stair case with horizontal velocity `u (m)/(s)` if the steps are h To keep yourself updated about physicsThe website, aimed at nurturing grasping power students, has classroom lectures on almost all the topics. It is an outcome of 23-year long toil of Physics expert who has made it a mission to simplify the complexities of Physics