Sunday

November 23, 2014

November 23, 2014

Posted by **Rebecca** on Tuesday, November 15, 2011 at 11:26pm.

- physics -
**WyzAnt**, Tuesday, November 15, 2011 at 11:35pmFind kinetic energy before, aka 1/2(mass of bullet)(velocity)^2. Then find the kinetic energy afterwards, which is 1/2(mass of bullet)(velocity afterwards)^2 + 1/2(mass of block)(whatever you got for part a)^2. Then divide whatever you got for the second part, divide it by the first part, and subtract the resulting decimal from 1 to find the percentage that was lost.

**Answer this Question**

**Related Questions**

Physics - A bullet of mass is fired horizontally with speed at a wooden block of...

physics - A 7 x 10^-3kg bullet is fired into a 2kg wooden block initially at ...

Physics (6) - A 10-g bullet moving 1000 m/s strikes and passes through a 2.0-kg ...

physics - A bullet of mass m = 5.89 g is fired into a block of mass M = 3.09 kg ...

physics - A 3.50 g bullet is fired horizontally at two blocks at rest on a ...

physics - A heavy wooden block rests on a flat table and a high-speed bullet is...

physics - A heavy wooden block rests on a flat table and a high-speed bullet is ...

physics - In Figure (1), a 3.50 g bullet is fired horizontally at two blocks at ...

Physics- so confused!! - A bullet with a mass of 5.40 g is fired horizontally at...

Physics - A heavy wooden block rests on a flat table and a high-speed bullet is ...