February 7, 2016

Homework Help: Math - Precalculus - Parametric Equations/Geometry

Posted by Sam on Wednesday, December 11, 2013 at 5:07pm.

A hockey puck of diameter 3 inches is spinning around its center at a speed of 3 counterclockwise rotations per second. The center of the puck is traveling at a speed of 24 inches per second at an angle of 45 degrees to the positive real axis.

(a) At time t=0, the center of the puck is at the origin. Where is the center of the puck at time t? (Time t is measured in seconds.)

(b) A point on the outer edge of the puck begins at the point (0, 3/2). What is its location at time t?

I tried solving this problem but I don't know where to start. This almost looks like a physics problem. How do you incorporate the "spinning"?

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