Homework Help: physics

Posted by Rachel M on Wednesday, February 8, 2012 at 12:12am.

A stone is catapulted at time t = 0, with an initial velocity of magnitude 20.2 m/s and at an angle of 39.1° above the horizontal. What are the magnitudes of the (a) horizontal and (b) vertical components of its displacement from the catapult site at t = 1.10 s? Repeat for the (c) horizontal and (d) vertical components at t = 1.73 s.

physics - drwls, Wednesday, February 8, 2012 at 3:17am
Call the horizontal displacement X and the vertical displacement Y.

X = 20.2 cos39.1 * t
Y = 20.2 sin39.1 * t - 4.9 t^2

Plug in the appropriate times (t) to get the answers they want.

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