We have a hose pipe which disposes water at the speed of `1- ms^(-1)`. The safe distance from a building on fire, on ground is 5m. How high can this water go ? (take : `g=10 ms^(-2)`)

We have a hose pipe which disposes water at the speed of 10- ms^(-1) . The safe distance from a building on fire, on ground is 5m. How high can this water go ? (take : g=10 ms^(-2) )

A Hose pipe which disposes water at the speed of 20 m//s . A very high building is no fire. Safe distance from building on ground is 8m . How high can this water strike the building?

A Hose pipe which disposes water at the speed of 20 m//s . A very high building is no fire. Safe distance from building on ground is 8m . How high can this water strike the building?

A girl is standing on the top edge of an 18 m high building. She tosses a coin upwards with a speed of 7.0ms^(-1) .How long does it take for the Coin to hit the ground ?How fast is the coin going just before it strikes the ground? ( g=10ms^(-2))

A girl is standing on the top edge of an 18 m high building. She tosses a coin upwards with a speed of 7.0ms^(-1) .How long does it take for the Coin to hit the ground ?How fast is the coin going just before it strikes the ground? ( g=10ms^(-2))

Water flows through a horizontal pipe whose internal diameter is 2.0 cm, at a speed of 1.0 ms^(-1) . What should be the diameter of the nozzle, if the water is to emerge at a speed of 4.0 ms^(-1) ?