Posted by Katie on Tuesday, July 21, 2009 at 10:14pm.
Please help me, thank you.
A 100 kg astronaut is standing on the outside surface of a 4.50 x 10^4 kg spacecraft. The astronaut jumps away from the spacecraft at 8.00 m/s. What happens to the spacecraft?

Math  connie (lost), Tuesday, July 21, 2009 at 10:19pm
multiply (simplified fraction)
8/3*(7/1)

Math  Katie, Tuesday, July 21, 2009 at 10:22pm
that's not right can someone please help.

Math  MathMate, Tuesday, July 21, 2009 at 11:08pm
I believe this is a case of conservation of momentums, namely zero since both objects were stationary to start with.
M_{1}V_{1} + M_{2}V_{2} = 0
100*8 + 45000*V_{2} = 0
V_{2}
= 100*8/45000
= 0.0178 m/s.
Answer: The spaceship moves at 0.0178 in the opposite direction as the astronaut.

Math  MathMate, Tuesday, July 21, 2009 at 11:08pm
Erratum:
Answer: The spaceship moves at 0.0178 m/s in the opposite direction as the astronaut.
Answer This Question
Related Questions
 math  Help Please. A 100 kg astronaut is standing on the outside surface of a 4...
 Physics  A 70.0kg astronaut pushes to the left on a spacecraft with a force ...
 physics  An astronaut comes loose while outside the spacecraft and finds ...
 physical science  A 200.0 kg astronaut and equipment move with a velocity of 2....
 science  What will eventually occur if in deep space an astronaut's wrench is ...
 physical science  a 300 kg astronaut and equipment move with a velocity of 2....
 physics  A 200.0 kg astronaut and equipment move with a velocity of 2.00 m/s ...
 Physics  An astronaut of mass m in a spacecraft experiences a gravitational ...
 Aths  Suppose you are an astronaut spacewalking outside your spacecraft to ...
 Physics  A 115kg astronaut throws an 18kg tool kit at 4.6m/s away from a ...
More Related Questions