Homework Help: physics

Posted by JJ on Friday, October 12, 2012 at 9:13am.

A toy cannon fires a .11 kg shell with initial velocity vi=10m/s in the direction 52 degrees above the horizontal. The shell's trajectory curves downward because of gravity, so that time t=.61 s the shell is below the straight line by some vertical distance deltaH. find the distance "deltaH" in the absence of air resistance. the acceleration of gravity is 9.8 m/s^2. answers in units of m

physics - drwls, Friday, October 12, 2012 at 9:24am
What straight line are you measuring from?

y = y0 + 10*sin52*t -(g/2)*t^2

"DeltaH" = y0 - y
(assuming it is measured positive downwards)

Plug in for t and g and compute deltaH

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