First slide

Projection Under uniform Acceleration

Question

Two particles are projected simultaneously with different speed from the same point as shown in Figure. Select incorrect statement.

Moderate

A

Their relative acceleration is zero.
B

Their relative velocity is constant.
C

Their relative velocity is along vertical direction.
D

Their relative velocity is along horizontal direction.

Solution

For (a), Relative acceleration = 0
For (b), Relative velocity = constant ( $∵$ a = 0)
For (c), Relative velocity in vertical direction = 4sin53°- 3sin37 $\neq$ 0
For (d), Relative velocity in horizontal direction. = 4cos53° - 3cos37° = 0

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