If a planets orbital radius is doubled, what happens to the length of a year on that planet? A)
It will remain the same.
B)
It will become twice as long.
9
It will become about 8 times as long.
D)
It will become about 2.8 times as long.

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: