Posted by **Jen** on Wednesday, February 22, 2012 at 6:33pm.

An astronaut is inside a rocket that is blasting off vertically from the launch pad. You want this rocket to reach the speed of sound (331 m/s) as quickly as possible, but you also do not want the astronaut to black out. Medical tests have shown that astronauts are in danger of blacking out for an acceleration greater than 4g.

1.) What is the maximum thrust the engines of the rocket can have to just barely avoid blackout? Start with a free-body diagram of the rocket.

2.) What force, in terms of her weight W, does the rocket exert on the astronaut? Start with a free-body diagram of the astronaut.

3.)What is the shortest time it can take the rocket to reach the speed of sound?

## Answer This Question

## Related Questions

- physics - A 7600 rocket blasts off vertically from the launch pad with a ...
- physics - A 7600 rocket blasts off vertically from the launch pad with a ...
- Physics - A 7500kg rocket blasts off vertically from the launch pad with a ...
- Physics - A rocket blasts off vertically from rest on the launch pad with an ...
- Physics - The Spent Rocket Parts: During launches, rockets often discard parts. ...
- college physics - a 7500 kilogram rocket blasts off vertically upward from the ...
- Physics - A rocket blasts off vertically from rest on the launch pad with an ...
- physics - I am having so much trouble with this D: A rocket is traveling ...
- Physics - On a planet that has no atmosphere, a rocket 14.2 m tall is resting ...
- intro to physics - a toy rocket moving vertically upward passes by a 2.2m- high ...

More Related Questions