A projectile is fired horizontally from a gun that is 84.0 m above flat ground,

Question

A projectile is fired horizontally from a gun that is 84.0 m above flat ground, emerging from the gun with aspeed of 250 m/s. (a) How long does the projectile remain in theair?
1 s
(b) At what horizontal distance from the firing point does itstrike the ground?
2 m
(c) What is the magnitude of the vertical component of its velocityas it strikes the ground?
3 m/s (a) How long does the projectile remain in theair?
1 s
(b) At what horizontal distance from the firing point does itstrike the ground?
2 m
(c) What is the magnitude of the vertical component of its velocityas it strikes the ground?
3 m/s

Explanation / Answer

Height H = 84 m Speed v = 250 m / s (a). required time t = [ 2H / g ] (b). Required distance R = v t                                       = v [ 2H / g ] (c). the magnitude of the vertical component of its velocityas it strikes the ground is V = gt substitue values wegte answers

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