Asked by axel

You fire a cannon ball from ground level at a speed of 20.0 m/s ∠30.0
Find the time taken for the ball to hit the earth. How far will it land?

Answers

Answered by Henry
Vo = 20m/s[30o]
Xo = 20*Cos30 = 17.3 m/s.
Yo = 20*sin30 = 10 m/s.

Y = Yo + g*Tr
Y = 0
Yo = 10 m/s.
g = -9.8 m/s^2
Solve for Tr(Rise time).

Tf = Tr = Fall time.

Dx = Xo * (Tr+Tf)
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