Conservation of Momentum problem-don't understand the solution

AI Thread Summary
The discussion revolves around a conservation of momentum problem involving two pucks on an air-hockey table, where puck A collides with puck B, initially at rest. Puck A has a mass of 0.025 kg and a velocity of 5.5 m/s, while puck B has a mass of 0.050 kg. The challenge lies in determining the final speeds of both pucks post-collision, considering the angles at which they separate. Participants suggest that including a diagram and clarifying the equations used would aid in solving the problem. The thread emphasizes the importance of providing complete information to facilitate understanding and resolution of the physics problem.
skier07
Messages
8
Reaction score
0
[SOLVED] Conservation of Momentum problem-don't understand the solution

Homework Statement



The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.025kg and is moving along the x-axis with a velocity of 5.5m/s. It makes a collision with puck B, which has a mass of 0.050kg and is initially at rest. The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find the final speed of (a) puck A and (b) puck B.

Homework Equations






The Attempt at a Solution


X direction:


Y direction:






Plug into (2)
 
Physics news on Phys.org
More Information?

skier07 said:

Homework Statement



After the collision, the two pucks fly apart with the angles shown in the drawing.

...

Plug into (2)

No one has posted yet to help you but I think that you should include the drawing and demonstrate what equation (2) is exactly. The lack of information makes your problem difficult to solve...
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top