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question 1

a 1490 kg car is moving with a steady speed of 88km/h at a constant height h above the ground on a slop track with an inclination angle to the horizontal. if there is no side force on the tyres determine(a)the radius of curvature r of the track, (b) the minimum coefficient of friction vetween the tyres and the track for the car to move at the same height ut at a speed of 160km/h

question 2

a train (A) with a mass of 6500 kg is traveling at 45km/h when it strikes a second truck () which has a mass of 1800 kg and is at rest. if the coefficient of restitution for the collision is 0.69 and all resistance to motion are negligible calculate,(a) the speed of the trains A and B immediatly after the impact,(b) as a result of damage during the collision truck B has a constant friction resistance to the motion of 590 N. truck B travels along the horizontal for 8m after which the track is inclicned at a 5 degree abve the horizontal. calculate the distance the truck B will move up this incline before coming to rest. (c) determine whether the truck will remain at rest ot run down the track again.

Thanks a lot