Q.

A body is projected with velocity v1 from the point A as shown in Fig. At the same time, another body is projected vertically upwards from B with velocity v2. The point B lies vertically below the highest point of first particle. For both the bodies to collide, v2/v1 should be

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a

2

b

32

c

0.5

d

1

answer is C.

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Detailed Solution

Vertical component of both should be same.v2=v1sin30o⇒v2v1=12=0.5
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A body is projected with velocity v1 from the point A as shown in Fig. At the same time, another body is projected vertically upwards from B with velocity v2. The point B lies vertically below the highest point of first particle. For both the bodies to collide, v2/v1 should be