Posted by Anonymous on Sunday, January 10, 2010 at 5:00pm.
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides headon and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 3.9 m/s. (a) Calculate the velocity of the target ball after the collision.
m/s
(b) Calculate the mass of the target ball.
kg

physics  drwls, Sunday, January 10, 2010 at 5:34pm
You will need two equations to solve for the two unknowns: target ball final velocity and mass.
The kinetic energy and momentum conservation equations, applied together, will let you solve for both.
Pleass show your work for further help.

physics  Jasmin, Monday, April 18, 2011 at 10:34am
1.21 kg times 5. m/s
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