What is the Momentum Change in an Elastic Collision?

AI Thread Summary
In an elastic collision involving a 1220 kg ball moving east and a stationary second ball, the first ball deflects at 27.9 degrees north after the collision, while the second ball moves at 62.1 degrees south of east. The discussion focuses on calculating the difference between initial and final momentum, determining the mass of the second ball, and finding the final momentum for each ball. Participants are encouraged to share their attempts at solving the problem to facilitate assistance. Key equations related to momentum conservation and elastic collisions are referenced. The thread emphasizes the importance of showing work to receive help effectively.
silviamar21
Messages
4
Reaction score
0

Homework Statement



A ball with a mass of 1220 kg is moving in a straight line heading due east when it collides elastically with a second ball that is at rest. After the collision the first ball deflects 27.9 degrees north of its original path and the second ball moves in a line 62.1 degrees south of east. A) what is the difference between the initial and final momentum of the system. B) What is the mass of the second ball? C) Find the final momentum of each ball.

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
You need to show your attempt at a solution so that we can know how to help. This is a forum rule.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top