A cannonball is fired horizontally from the top of a cliff.The cannon is at heig

Question

A cannonball is fired horizontally from the top of a cliff.The cannon is at height H = 80.0 m above groundlevel, and the ball is fired with initial horizontal speedv0. Assume acceleration due to gravity tobe g = 9.80 m/s.
Assume that the cannon is fired attime t=0 and that the cannonball hits the ground at timetg. What is the y position of the cannonball atthe time tg/2? A cannonball is fired horizontally from the top of a cliff.The cannon is at height H = 80.0 m above groundlevel, and the ball is fired with initial horizontal speedv0. Assume acceleration due to gravity tobe g = 9.80 m/s.
Assume that the cannon is fired attime t=0 and that the cannonball hits the ground at timetg. What is the y position of the cannonball atthe time tg/2? Assume that the cannon is fired attime t=0 and that the cannonball hits the ground at timetg. What is the y position of the cannonball atthe time tg/2?

Explanation / Answer

H = gtg2/2 h = g(tg/2)2/2 = H/4 answer: H - H/4 = 60 m above the ground

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