Can the coefficient of restitution be negative? Physics Momentum and Collisions Inelastic Collisions 1 Answer Antoine Apr 19, 2015 No, #e# cannot be negative. Moreover, the range of validity of #e# is #0<=e<=1# #e# is coefficient of restitution Answer link Related questions In a collision between two objects of identical mass, could the acceleration values be different? Is momentum conserved in an elastic collision but not in an inelastic collision? What are some examples of a coefficient of restitution? Does the coefficient of restitution change? How do you calculate inelastic collisions? How do you calculate the coefficient of restitution? When a moving object collides with a stationary object of identical mass, the stationary object... Why is law of conservation of momentum important? Why don't inelastic collisions conserve energy? What does the law of conservation of momentum mean? See all questions in Inelastic Collisions Impact of this question 6423 views around the world You can reuse this answer Creative Commons License