Posted by **anonymous** on Friday, December 31, 2010 at 2:30pm.

which of newton's laws (1, 2, or 3)are used in the following:

1) spaceship reaches the speed for orbit around the earth,

2) pushing the shuttle forward in space

3) the force needed to escape earth's atmosphere

- physical science -
**Damon**, Friday, December 31, 2010 at 5:18pm
1) F = m a #2

G m Me/r^2 = m v^2/r specifically

2) conservation of momentum #1

specifically:

mass remaining on craft * speed of craft + mass of exhaust * speed of exhaust (which is negative) = original mass of craft* original speed of craft

BUT

You can also say action = reaction

force of exhaust on rocket = force of rocket on exhaust - #3

3) well the important thing is law of gravity, but at every altitude F = m a

## Answer this Question

## Related Questions

- Algebra - the space shuttle does one full orbit every 90 minutes and the earth ...
- science science science science science science - The moon orbits around the ...
- Physics - The space shuttle is in a 3e+5 m high orbit over the earth. The radius...
- Math - Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths ...
- Math - Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths ...
- Physics - When the space shuttle (mass of the shuttle = 2 x10^6 kg) was at the ...
- Physics - Suppose the space shuttle is in orbit 430 km from the Earth's surface...
- Physics ASAP - Suppose the space shuttle is in orbit 390 km from the Earth's ...
- Physics - The space shuttle typically orbits 400 km above the earth's surface. ...
- physics - . The space shuttle typically orbits 400 km above the earth's surface...

More Related Questions