BrainMass Quizzes Classical Mechanics This quiz is designed to test and improve your knowledge on Classical Mechanics. 1 What direction does the centripetal force act on a body moving in a circular motion? vertically upwards towards the centre away from centre 2 What is the source of centripetal force for a stone rotated in a circle by string? string stone itself surrounding air 3 What force prevents a body lying on the floor of a moving vehicle from sliding? weight of the body normal reaction force friction 4 What is the law of conservation of momentum? The total momentum of an isolated system (system with no external force) of particles is conserved The total momentum of an open system of particles is conserved No conservation of momentum is possible 5 When a car moves with a constant velocity, then the net external force is not zero the net external force is zero none of the above Submit Quiz
