A missile starts from rest and travels along a straight track. It has an acceleration of a = 6t for an interval between 0 and 5 second while for the next interval between 5 and 10 seconds, it
has an acceleration of a = 2t + 20 as shown in Figure Q1. Draw the v-t graph that describes the
motion of missile and find the distance traveled in 10 s.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?