A body projected from the top of a tower with a velocity u = 3i + 4j + 5k `ms^(-1)` . Where `hatj` and `hatk` are unit vectors along east, north and vertically upwards respectively. If the height of the tower is 30 m, horizontal range of the body on the ground is(g = `10ms^(-2)`)

Options

A. 12 m
B. 9 m
C. 25 m
D. 15 m

Answer

D