Homework Help: physics 30

Posted by Don on Sunday, May 13, 2012 at 7:22pm.

an object is thrown from 1.5m above the ground with a velocity of 15m/s and at an angle of 25deg with the ground. using vectors and motion equations, determine how long the object will remain in the air before returning to the ground. ARGHHHHHH help please..

physics 30 - bobpursley, Sunday, May 13, 2012 at 8:47pm
horizontal velocity=15cos25
vertical initial velocity= 15sin25

in the vertical:
hf=hi+viv^t-4.9t^2
0=1.5+15sin25*5-4.9t^2

solve the quadratic equation.

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