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A mass of 1 kg is thrown up with a veloc...

A mass of 1 kg is thrown up with a velocity of 100 m/s. After 5 seconds. It explodes into two parts. One parts of mass 400 g comes down with a velocity 25 m/s Calaculate the velocity of other parts:

A

`40 m//s uarr `

B

`40 m//s darr`

C

`100 m//s uarr`

D

`60 m//s uarr`

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