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Hello,
Q.) A hockey puck moving at 0.48 m/s collides elastically with another puck that was at rest. The pucks have equal mass. The first puck is deflected 39° to the right and moves off at 0.35 m/s. Find the speed and direction of the second puck after the collision. Make sure the speed is in m/s and direction in terms of degrees
A.) The way i tried solving this problem is below:
m1=m2
Hockey Puck #1:
p=p(final)-p(initial)
=m1(vfinal-vinitial)
Hockey Puck #2:
=m2(vfinal-vinitial)
p1=p2
m1(v1final-v1initial)=m2(v2final-v2initial)
Both the masses cancel out... we have the following:
v1initial=.48
v1final= .35cos39
v2initial=0
Plug in formula and get v2final=-.21 since it's going to the left...but this answer is wrong.
I tried 39° for the second puck since they both weight the same but this is wrong as well.
Please i don't know why I'm getting this wrong. Any help will be appeciated
Q.) A hockey puck moving at 0.48 m/s collides elastically with another puck that was at rest. The pucks have equal mass. The first puck is deflected 39° to the right and moves off at 0.35 m/s. Find the speed and direction of the second puck after the collision. Make sure the speed is in m/s and direction in terms of degrees
A.) The way i tried solving this problem is below:
m1=m2
Hockey Puck #1:
p=p(final)-p(initial)
=m1(vfinal-vinitial)
Hockey Puck #2:
=m2(vfinal-vinitial)
p1=p2
m1(v1final-v1initial)=m2(v2final-v2initial)
Both the masses cancel out... we have the following:
v1initial=.48
v1final= .35cos39
v2initial=0
Plug in formula and get v2final=-.21 since it's going to the left...but this answer is wrong.
I tried 39° for the second puck since they both weight the same but this is wrong as well.
Please i don't know why I'm getting this wrong. Any help will be appeciated
