Homework Help: Physics

Posted by Kaylah on Friday, October 14, 2011 at 8:12pm.

A seed shoots out from the pod with the speed of 2.4 m/s but with a direction of motion 30° below the horizontal. The seed pod is initially 1.2 m above the ground.
(a) How long does it take for the seed to land? (Neglect air resistance.)
(b) What horizontal distance does it cover during its flight?

Physics - bobpursley, Friday, October 14, 2011 at 8:17pm
vertical speed initially: 2.4*sin30

time to ground:
h=vi*t+1/2 g t^2
1.2=2.4*sin30*t+4.9t^2
put this in quadratic form, and solve for t using the quadratic equation.

horizonal distance= 2.4cos30*t

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