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Two particles move in the same straight ...

Two particles move in the same straight line starting at the same moment from the same point in the same deirectin. The first moves with constant velocity u and the second starts from rest with constant acceletation f. Then

A

they will be at the gratest distance at the end of time `(u)/(2f)` from the start

B

they will be at the gratest distance at the end of time `(u)/(f)` from the start

C

their greatest distance is `(u^2)/(2f)`

D

their greatest distance is `(u^2)/(f)`

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The correct Answer is:
B, C
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