2. A disc speeds up from rest at a constant rate of 2.5 rad/s^2. a. What is the final angular speed of the disc after 18 secs.? (45 rad/s)
b. How many revolutions will the disc go through during this time period?
(64.5 revs)
C. WHat is the linear speed of a point at the end of the disc after 18 secs. (The radius
of the disc is 50 cm. (22.5 m/s)
I

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Aball horizontally thrown from a cliff at 8m/s