Thursday

August 28, 2014

August 28, 2014

Posted by **Cavin** on Friday, March 2, 2007 at 1:31am.

(a) Determine the velocity of the center of mass of the two balls if they have the same mass.

(b) Determine the velocity of the center of mass of the two balls if the mass of one ball(v=9.55m/s) is twice the mass of the other ball (v=11.0m/s)

(a) mv1 + mv2 = 2m V

where v is the center-of-mass velocity

V = (v1 + v2)/2 = -1.45/2 = -0.725 m/s

(b)2mv1 + v2 = 3m V

solve for V

- Physics -
**Mike**, Monday, October 31, 2011 at 9:08amThe second equation of part be should be 2mv1 + mv2=3mV. 2m(9.55)+(-11m)=3mV which is equal to 19.1m-11m=3mV which is equal to 8.1m=3mV now divide both sides by 3m (where the m's cancel out)and you get V= 2.7 m/s

**Related Questions**

Physics - Two balls are approaching each other head-on. Their velocities are +10...

physics - Two balls are approaching each other head-on. Their velocities are +9....

Gen physics - Two balls are approaching each other head-on. Their velocities are...

physics - Two balls are approaching each other head-on. Their velocities are +...

College Physics - Two balls have masses 44 kg and 86 kg. The 44 kg ball has an ...

Physics - Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial ...

physics - Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial ...

Physics - A cue ball collides with two other snooker balls and comes to a ...

Physics - A cue ball collides with two other snooker balls and comes to a ...

Physics - A cue ball collides with two other snooker balls and comes to a ...