HESI A2 test Physic - Rotation
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8 Terms
A car wheel is rotating at 6 revolutions per second and then accelerates to 7.5 revolutions per second over a period of 4.5 seconds. What is the angular acceleration of the wheel?
0.33 rev/s²
A fan rotates at a speed of 450 revolutions per second for 5 minutes but then has its speed setting turned down to 240 revolutions per second until 5.5 minutes. What is the angular acceleration of the fan in the period between 5 minutes and 5.5 minutes?
-420 rev/min2
A bicycle’s wheels are moving at a speed of 0.78 revolutions per second. The cyclist sees a log in the road and brakes, slowing the bicycle to 0.05 revolutions per second over 4 seconds. What is the angular acceleration of the bicycle wheel?
-0.18 rev/s2
A motorcyclist accelerates his bike over a period of 3 seconds, and the motorcycle wheel increases from 23 revolutions per second to 34 revolutions per second. What is the angular acceleration of the wheel?
3.7 rev/s2