I got part a and part e, but need help on b,c,d. Thanks somuch!
Problem 8-92a:
A 3.14-kg block is traveling in the -x direction at 5.48 m/s, and a1.15-kg block is traveling in the +x direction at 3.47 m/s.Calculate the velocity vcm of the center of mass.
-3.08 m/s
You are correct.
Problem 8-92b:
Subtract vcm from the velocity of each block to find the velocityof each block in the center-of-mass reference frame. Give velocityof the 3.14-kg block first, then the 1.15-kg block.
Incorrect.
Problem 8-92c:
After they make a head-on elastic collision, the velocity of eachblock is reversed (in the center-of-mass frame). Calculate thevelocity of each block in the center-of-mass frame after thecollision. Calculate the velocity for the 3.14-kg block first, thenthe 1.15-kg block.
Incorrect.
Problem 8-92d:
Transform back into the original frame by adding vcm to thevelocity of the 3.14-kg block, then do the same calculation for the1.15-kg block.
Problem 8-92e:
Check your result by calculating the initial and final kineticenergies of the blocks in the original frame. Enter the initialkinetic energy first.
5.41Ã101 J 5.41Ã101 J
You are correct.
I got part a and part e, but need help on b,c,d. Thanks somuch!
Problem 8-92a:
A 3.14-kg block is traveling in the -x direction at 5.48 m/s, and a1.15-kg block is traveling in the +x direction at 3.47 m/s.Calculate the velocity vcm of the center of mass.
-3.08 m/s
You are correct.
Problem 8-92b:
Subtract vcm from the velocity of each block to find the velocityof each block in the center-of-mass reference frame. Give velocityof the 3.14-kg block first, then the 1.15-kg block.
Incorrect.
Problem 8-92c:
After they make a head-on elastic collision, the velocity of eachblock is reversed (in the center-of-mass frame). Calculate thevelocity of each block in the center-of-mass frame after thecollision. Calculate the velocity for the 3.14-kg block first, thenthe 1.15-kg block.
Incorrect.
Problem 8-92d:
Transform back into the original frame by adding vcm to thevelocity of the 3.14-kg block, then do the same calculation for the1.15-kg block.
Problem 8-92e:
Check your result by calculating the initial and final kineticenergies of the blocks in the original frame. Enter the initialkinetic energy first.
5.41Ã101 J 5.41Ã101 J
You are correct.
