A particle is projected from the ground at an angle 
with the horizontal with an initial speed 
. At what time after which velocity vector of projectile is perpendicular to the initial velocity? [in second]
A particle is projected from the ground at an angle with the horizontal with an initial speed . At what time after which velocity vector of projectile is perpendicular to the initial velocity? [in second]
Question ID - 153864 | SaraNextGen Top Answer
A particle is projected from the ground at an angle with the horizontal with an initial speed . At what time after which velocity vector of projectile is perpendicular to the initial velocity? [in second]
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A particle is projected from the ground at an angle |
1 Answer
127 votes
Answer Key / Explanation : (4) -
(4)
Initial velocity 
Velocity after time 
is
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Since 
and 
are perpendicular to each other
127 votes
Answer Link
127