Acertain freely falling object, released from rest, requires 1.60 s to travel the last 29.0 m before it hits the ground. (a) find the velocity of the object when it is 29.0 m above the ground. (indicate the direction with the sign of your answer. let the positive direction be upward.)

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: