A projectile is fired with velocity v 0 at an angle 60 ° with horizontal. At top of its trajectory, it explodes into three fragment of equal masses. First fragment retraces the path and the second moves vertically upward with speed 3 v 0 2 . The speed of third fragment is

Question

A projectile is fired with velocity v 0 at an angle 60 ° with horizontal. At top of its trajectory, it explodes into three fragment of equal masses. First fragment retraces the path and the second moves vertically upward with speed 3 v 0 2 . The speed of third fragment is, 3 v 0 2, 5 v 0 2, v 0, 2 v 0

MARKS App · Accepted Answer

Let velocity of the third fragment be v → P → i = P → f ⇒ 3 m . v 0 2 i ^ = - m v 0 2 i ^ + m . 3 v 0 2 j ^ + m v → ⇒ v = 4 v 0 2 i ^ - 3 v 0 2 j ^ ⇒ v = 5 v 0 2

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