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Question

A particle A is dropped from a height and another particle B is projected in horizontal direction with speed of 5 m/s from the same height, then correct statement is

A
particle A will reach at ground first with respect to particle B.
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B
particle B will reach at ground first with respect to particle A
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C
both particles will reach at ground simultaneously.
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D
both particles will reach at ground with same speed.
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Solution

The correct option is C both particles will reach at ground simultaneously.
Time required to reach the ground is dependent on the vertical acceleration of the particle. Vertical acceleration of both the particles A and B are exactly same. Although particle B has an initial velocity, but that is in horizontal direction and it has no component in vertical (component of a vector at a direction of 90=0) direction. Hence, they will reach the ground simultaneously. Hence, the correct answer is option (c).

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