A) What was the speed of puck A before the collision? b)Calculate the charge in

Question

A)What was the speed of puckAbefore the collision? b)Calculate the charge in the total kinetic energy of the system that occurs during the collision A)What was the speed of puckAbefore the collision? b)Calculate the charge in the total kinetic energy of the system that occurs during the collision A)What was the speed of puckAbefore the collision? b)Calculate the charge in the total kinetic energy of the system that occurs during the collision On a frictionless, horizontal air table, puckA(with mass 0.245) is moving toward puckB(with mass 0.355), that is initially at rest. After the collision, puckAhas a velocity of 0.119to the left, and puckBhas velocity 0.660to the right. A)What was the speed of puckAbefore the collision? b)Calculate the charge in the total kinetic energy of the system that occurs during the collision

Explanation / Answer

a) Conservation of linear momentum, since there is no external force on system, 0.245v+0= -0.245*0.119 + 0.355*0.660 =>v= 0.837 m/s, towards right b) Change in KE=1/2( (0.245*(0.837)^2-0.245*(0.119)^2- 0.355*(0.660)^2- )) =0.00676598 J

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