1.

An object falls from a bridge which is 45 m above the water. It falls directly into a small row - boat moving with constant velocity that was 12m from the point of impact when the object was released. What was the speed of the boat ?

Answer»

Solution :VELOCITY of BOAT `=V=s/t,` Here s=12 m
t=time FO fall of object from BRIDGE
`=sqrt((2h)/(g)) =sqrt((2 xx45)/(10))=3s`
`V=(12)/(3)=4ms^(-1)`


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