14 m/s A -2 m- B 1.5 m с h d D

Find Part D and E

(a) A car of weight 600 N is at rest. Another car of weight 420 N body moving to the left with a velocity of 12 m/s collides with the car which is at rest . After impact the car which is moving before impact comes to rest. Find the final velocity of body after impact and the coefficient of restitution. (b)A vehicle of mass 13 tonnes runs into a buffer stop having three buffer springs connected in parallel each of 1150 kN/cm, 2850 kN/cm and 1350 kN/cm stiffness respectively. Find the maximum compression of the springs, if the truck is travelling at 65 km/hr. Also calculate the load acting on the spring.

A hunter observed a bird flying overhead and estimated the His rifle is If he fires at height at 15 m and its speed at 20 m/second. capable of a muzzle velocity of 48 m/sec. the instant the bird is directly overhead, at what angle should he incline his rifle in order to hit it? How many meters from his position will the bird hit the ground assum- ing that the weight of the bullet compared to the weight of the bird is negligible?