Tuesday
October 21, 2014

Homework Help: Physics

Posted by <3 on Sunday, September 15, 2013 at 8:25pm.

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0 below the horizontal. It strikes the ground 6.00 s later.

Initial velocity components:
vx = 8.65 m/s
vy = -3.67 m/s

(c) Find the equations for the x- and y- components of the position as functions of time.
x = 8.65t
y = ?

(d) How far horizontally from the base of the building does the ball strike the ground?
51.9 m

(e) Find the height from which the ball was thrown.

(f) How long does it take the ball to reach a point 10.0 m below the level of launching?

I need help on (c), (e), and (f).

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