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

An object falls from a bridge that is 45m above the water . It falls d

1.	An object falls from a bridge that is 45m above the water . It falls directly into a small row-boat moving with constant velocity that was 12 m from the point of impact when the object was released. What was the speed of the boat ?
Answer» Solution :Boat velocity `v=s/t, "But"s=12m` `:. T=s/u=12/v`…(1) Ball has fallen from a HEIGHT of 45M, `u=0` `S=ut+1/2at^(2)` `45m=0+1/2xxgt^(2)=1/2xx10xx((12)/v)^(2)` `v^(2)=1/2xx10xx(144)/(45)=(720)/(45)` `v^(2)=16` `:. V=4 m//s`