Thursday

October 30, 2014

October 30, 2014

Posted by **Alica** on Thursday, May 10, 2012 at 8:45pm.

(a) Find the speed of the combination after the collision.

m/s

(b) Find the kinetic energy of the bullet before the collision.

J

(c) Find the kinetic energy of the combination after the collision.

J

(d) How much kinetic energy did the bullet lose?

J

(e) What percent of the bullet's original kinetic energy is lost?

%

- AP physics -
**Elena**, Friday, May 11, 2012 at 2:28pmm1 = 0.0016 kg, v1 = 542 m/s, m2 =0.249, v2 = 0, u = ?

(a) m1•v1 +m2•v2 = (m1+m2) •u

u = m1•v1/(m1+m2).

(b) KE1 =m1•v1²/2.

(c) KE = ((m1+m2) •u²/2

(d) ΔKE = KE1 – KE.

(e) (ΔKE/KE1) •100%

- AP physics -
**Alica**, Friday, May 11, 2012 at 7:48pmI have never used these equations before, can you explain/ show me

**Answer this Question**

**Related Questions**

physics - A 2.00kg bullet moving at 600m/s strikes a piece of wood at rest on a ...

physics - A 25 g bullet is fired from a gun into a 1.35 kg block of wood ...

physics - A bullet of mass 0.0019 kg moving at 487 m/s embeds itself in a large ...

Physics - A bullet of mass kg moving at 500 m⁄s embeds itself in a large, ...

Physics - A .22 rifle bullet, traveling at 373m/s, strikes a block of soft wood...

Physics - A bullet with a mass of 0.01kg is fired horizontally into a block of ...

Physics - A 14g bullet is traveling at 306m/s when it strikes a block of wood. ...

Physics - A 41g bullet is traveling at 499m/s when it strikes a block of wood. ...

Physics - 1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that ...

Physics help please - A 13.2 gm bullet is fired into a 12.0 kg wood block that ...