A baby elephants works slowly towards the right (positive direction). The equation for the baby elephants position as a function of time is x (t) = 24 cm + (2.25 cm/s)t – (0.06 cm/5').
i. Calculate the baby elephant's initial; position, velocity and acceleration.
ii. Determine the time t when the elephant's velocity is zero.

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: