Question
On a cold winter day, a penny (mass 2.50 g) and a nickel (mass 5.00 g) are lying on the smooth (frictionless) surface of a frozen lake. With your finger, you flick the penny toward the nickel with a speed of 2.50 m/s .
The coins collide elastically; calculate both their final speeds. What are the directions of their final velocities?
The coins collide elastically; calculate both their final speeds. What are the directions of their final velocities?
Answers
Damon
initial I = .00250 * 2.5
=
final I = .00250 * Vp + .00500 * Vn
Initial Ke = final K
=(1/2)(.00250)(6.25)
=(1/2)(.00250)Vp^2 + (1/2) (.00500) Vn^2
=
final I = .00250 * Vp + .00500 * Vn
Initial Ke = final K
=(1/2)(.00250)(6.25)
=(1/2)(.00250)Vp^2 + (1/2) (.00500) Vn^2