Sorry this is hard to see but the answers are A. 0.40Hz
B. 0.85Hz
C. 1.50Hz
D. 2.50Hz

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

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:

Which word expression describes how much to calculate pressure