A projectile of mass m is fired horizontally with aninitial speed of v 0 from a

Question

A projectile of mass m is fired horizontally with aninitial speed of v0 from a height of habove a flat, desert surface. Neglecting air friction, at theinstant before the projectile hits the ground, find the followingin terms of m, v0, h, andg (use v_0 for v0).
Find
(a) The work done by the force of gravity on the projectile.
(b) The change in kinetic energy of the projectile since it wasfired.
(c) The final kinetic energy of the projectile.
(d) Are any of the answers changed if theinitial angle is changed?
4
4

Explanation / Answer

a) mgh b)mgh c) (mvo2)/2 +mgh d) no

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