# Recent content by ajinx999

1. ### Finding Range, Max Height and Speed of Projectile

There's no acceleration along x-axis. The acceleration due to gravity acts only along the -y axis. 'A' implies the angle of projection. Assuming the projectile is fired from the origin, x=v0cosAt+0.5(0)t2 t=x/v0cosA The net y-displacement of the projectile is zero, since the projectile...

Considering u1 = 3 m/s u2 = -3 m/s e = 1/3 e = (v2-v1)/(u1-u2) → v2-v1 = 2 m/s u1+u2=v1+v2 ...(conservation of linear momentum) → v1+v2 = 0 → v1 = -v2 Therefore, the speed of each ball after impact is 1 m/s.
3. ### About 'Coefficient of Restitution'

cor, actually, tells us how much of the kinetic energy of the system was converted into other form of energy after collision. cor is not a (joint) property of colliding 'material', but is joint property of colliding 'bodies'. Shape affects cor. When we talk of a particular body, we consider its...
4. ### About 'Coefficient of Restitution'

Shape does affect cor. cor is just the ratio of the velocities of separation to velocities of approach. In determining cor, the colliding bodies can be any shape, one just need to know the velocities. Although, cor is a joint property of the colliding bodies, it does change when the shape of one...
5. ### About 'Coefficient of Restitution'

Thanks! In other words, the components of the velocities along the line containing the impulse vector should be considered.
6. ### About 'Coefficient of Restitution'

OK, I agree, coefficient of restitution is a joint property of both colliding bodies. It can't be attributed to one particular body. Thanks! How to measure cor when the collision is not one dimensional? For one dimensional collisions, we do take into consideration the directions of...
7. ### About 'Coefficient of Restitution'

I, still, don't agree on cor as a joint property of colliding bodies. Its something like saying 'velocity' is a property of a body in motion. The cor changes accordingly with different characteristics of collision. A body can have different cors based on different conditions of collision. It...
8. ### About 'Coefficient of Restitution'

Coefficient of Restitution (cor) of colliding bodies describes how elastic or inelastic a collsion is. But, most internet sources (the golf-related sites) and http://en.wikipedia.org/wiki/Coefficient_of_restitution" [Broken], describes cor as a property of a particular object. Isn't this wrong...