Solved: PHYSICS Question for NEET

NEET PHYSICSEasy

Velocity of a body on reaching the point from which it was projected upwards, is:

$v=0$

$v=2u$

$v=0.5u$

$v=-u$

Initial Conditions: A body is projected vertically upwards with an initial velocity $u$ . Let the upward direction be positive ( $+$ ) and the downward direction be negative ( $-$ ). Thus, initial velocity is $+u$ .
Displacement Condition: When the body reaches the point of projection, the net displacement ( $s$ ) is zero because the final position coincides with the initial position.
Apply Kinematic Equation: Use the third equation of motion $v^2 = u^2 + 2as$ .

Determine Sign: Since the body is moving downwards while returning to the projection point, its velocity must be negative (opposite to the direction of projection). Therefore, the final velocity is $v = -u$ . The magnitude (speed) remains the same, but the direction is reversed .

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