It isn't clear whether this is your complete analysis or not. Some documents I've received by the form haven't been complete, so I suspect something is going on with the form but I haven't yet been able to figure out what it might be.
Actually, looking back at your email I see that you attached the document. I can't open it here, so I'll check next time I'm at VHCC.
In the meantime, see my notes and please make the indicated revisions.
Phy 201
Kristen SparksPhysics 201 Professor SmithCollision experimentProcedure: Roll a ball down an incline and onto a horizontal incline, from which it will collide immediately after leaving that incline with a small marble supported by a section of straw. The plane normal to the contact surfaces between the two marbles should be vertical and perpendicular to the direction of the first ball's motion. See how far each ball travels after collision before reaching the floor, and use this information to determine the velocity of each ball after the collision. Let the first ball roll down the inclines and off the edge without hitting the second ball. Use your observation of its horizontal range to determine how fast this ball was traveling before the collision. Repeat this five times. Determine `dv_2, the change in velocity of the second ball in the collision. Determine `dv_1, the change in velocity of the first ball in the collision. Using the fact that m2 `dv2 = -m1 `dv1, find the ratio m2 / m1 of the mass of the second ball to the mass of the first ball.
You need to describe the procedure in your own words. The instructions I gave you were brief, and assumed you were familiar with the situation, and was accompanied by a fair amount of description on my part. The purpose of describing the experiment is to describe it so a general reader could understand what was done.
Data:
Undeflected ball
Deflected (first ball)
Target ball (second ball)Horizontal fall
29.3 cm
25 cm
61.9 cmChange of velocity post collision
-10.4 cm/s
143.95 cm/sKE before collision This is velocity, not KE.
You need to explain how you got the velocities you did.
Note that the distance of fall is also part of the data and should be included, since it was necessary for finding the velocities.