(14 The wheelbase of a car is 3-3 m, and the centre of mass is 1 2 m in front of the rear axle and 0-75 m above the ground-level. The coefficient of friction between the wheels and the road is 0-45. Find the maximum acceleration which the car can be given on a level road if it has a rear-wheel drive. Find its maximum deceleration if the braking force on all the wheels is the same and no wheel slip occurs. ​

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?