Time left 0:16:25 Automobile A and B are initially 30 m apart travelling in adjacent highway lanes at speeds VA = 14.4 km/hr., VB 23.4 km/hr, at t = 0.0. Knowing that automobile A has a constant acceleration of 0.8 m/s2 and automobile B has a constant deceleration of 0.4 m/s2. Automobile A will overtake B after traveling a distance SA: Side view B Please help me I'm in an exam​

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?