Posted by **Sarah** on Monday, February 8, 2010 at 8:08pm.

A 0.0160-kg bullet traveling horizontally at 396 m/s strikes a 3.95-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.06 m, how far from the table does the block hit the floor?

- physics -
**Sarah**, Monday, February 8, 2010 at 8:26pm
I had thought that to do this, you'd add the momentum of the two and set it equal the combined mass to find the velocity.

.0160(396)+3.95(0)=3.966(V)

V=1.59m/s

Then I set up a triangle to try to find the distance from the table and used V as the c value in the pythagorean theorem.

1.06^2+x^2=1.59^2

x=1.19m

But the book says that isn't correct. What am I doing wrong?

- physics -
**fairy god mother **, Thursday, November 19, 2015 at 6:40am
yes, you mixed up your units. you divided the sqrt of a velocity and a height expecting to get a height.

## Answer this Question

## Related Questions

- Physics - A 0.0160-kg bullet traveling horizontally at 396 m/s strikes a 3.95-kg...
- Physics help please - A 13.2 gm bullet is fired into a 12.0 kg wood block that ...
- physics - A block of wood with a mass of 4.62 kg sits on the edge of a table ...
- physics - A 20 g bullet moving horizontally with a speed v hits a 2-kg 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 - A .22 rifle bullet, traveling at 373m/s, strikes a block of soft wood...
- physics - A 10-g bullet of unknown speed is shot horizontally into a 2-kg block ...
- Physics - A bullet with a mass of 0.01kg is fired horizontally into a block of ...
- Physics - 1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that ...

More Related Questions