An object starts from rest at the origin (x0 = 0) and travels in a straight line with a constant acceleration (a = constant). suppose the relation between the position (x) and time (t) is given by x = (3.4 m/s^2) t^2 what is the acceleration of the object?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.