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A particle P is projected upwards with 8...

A particle `P` is projected upwards with `80m//s`. One second later another particle `Q` is projected with initial velocity `70m//s`. Before either of the particle srikes the ground `(g=10m//s^(2))`

A

both particle are at rest with respect to each other

B

after `2s` distance between the particles is `75m`

C

when particle `P` is at highest point, particle `Q` is moving downwards

D

when particle `P` is at highest point, particle `Q` is moving upwards

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The correct Answer is:
A, B
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