Monday

July 28, 2014

July 28, 2014

Posted by **Zoe** on Saturday, March 22, 2008 at 2:19pm.

A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. He is closer to one cliff than the other. He fires a gun and , after a while, hears three echoes. The second echo arrives 1.6s after the first, and the third echo arrives 1.1s after the second. Assuming that the speed of sound is 343m/s and that there are no reflections of sound from the ground, find the distance between the cliffs.

- ap physics -
**bobpursley**, Saturday, March 22, 2008 at 3:44pmThe first echo is from the nearer clift. The second is from the farther clift. The third is from the nearer clift (second echo on that path from the farther clift).

Let N be the distance from nearer clift.

Let F be teh distance from the farther clift.

2N=v t

2F=v(1.6+t)

2F+2N=v(1.1+1.6+t)

Three equations, you can solve for all three, and you want to find F+N.

**Related Questions**

physic echooo - A hunter is standing on flat ground between two vertical cliffs...

AP Physics - A monkey is hanging from a branch located exactly 24 meters along ...

Algebra Please help... - What a steal of a Deal! Hunter went to TV City to buy a...

Algebra Please help... - What a steal of a Deal! Hunter went to TV City to buy a...

physics! - The mass of an automobile is 1160kg, and the distance between its ...

PRECALC! HELP ASAP!! - A television antenna sits on the roof. Two 78-foot guy ...

Physics - *I am lost on a bunch of different problems, and this is one of them. ...

Phoenix - Projectile motions problems are some of the most important problems ...

Tan^2 Integrals - I'm having a hard time understanding how to do Integrals ...

Physics - *I am lost on a bunch of different problems, and this is one of them. ...