Recent content by luffy3san

Yeah, that's what I was assuming but i found out my mistake. I noticed that CR should've been CR = \vec{v}sinθ' / \vec{u}sinθ Thanks rudeman and Andrew for the suggestions!

Oh, thanks. We haven't covered angular momentum yet so shouldn't be... i think. I'll have to ask the instructor next class.

Yes, I think so. I chose the x-axis to be the side of the table. On a x-y coordinate, the ball travels from the 3rd quadrant, hits at the origin, and deflects towards the 4th quadrant. And, I chose the angles to be along the x axis. Don't know if that's the right way.

Hmm not sure about the momentum transfer to the Earth etc. I checked a couple sites where they said momentum is conserved in the x direction in this situation.

Ah sorry... I got those two values for the momentum, they were one of the options but was marked as wrong.

Homework Statement A billiard ball of mass 0.162 kg has a speed of 1.86 m/s and collides with the side of the billiard table at an angle of 51.8°. For this collision, the coefficient of restitution is 0.841. What is the angle relative to the side (in degrees) at which the ball moves away from...

Homework Statement A soccer ball with a mass of 416 g bounces off the crossbar of a goal and is deflected upward at an angle of 56.7° with respect to horizontal. Immediately after the deflection, the kinetic energy of the ball is 46.9 J. What are the vertical and horizontal components of the...