### What is the magnitude of the total acceleration a

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Q1. A platform is rotating with the angular speed of 3.20 rad/s and an angular acceleration of 11.2 rad/s2. At a point on the platform that is 1.30 m from the axis of rotation, what is the magnitude of the total acceleration a?

Q2. A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision?

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