Posted by **janie** on Monday, May 31, 2010 at 9:41am.

An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 2520 km. When the astronaut jumps upward with an initial speed of 2.94 m/s, she rises to a height of 0.83 m. What is the mass of the planet?

- physics -
**drwls**, Monday, May 31, 2010 at 10:19am
Calculate the value of the acceleration of gravity "g" on that planet using

V = sqrt(2gH), which leads to

g = V^2/(2H)

Then use g = GM/R^2 to solve for the planet mass, M. G is the universal constant of gravity and R is the planet's radius

- physics -
**janie**, Monday, May 31, 2010 at 10:25am
unfortunately those calculations didnt work, its saying my answer varies significantally

## Answer this Question

## Related Questions

- Physics - An astronaut exploring a distant solar system lands on an unnamed ...
- Physics - A 67.0 kg astronaut on the planet Zircon (mass = 1.15 x 1023 kg and ...
- Physics - An astronaut jumps on the moon with an initial upward velocity of 4....
- college - A spaceship lands on the planet whose radius is 5 times that of planet...
- Physics - An astronaut on the planet Vimrom IV finds that she can jump a maximum...
- Math - On the moon the acceleration due to gravity is 5 ft/sec2. An astronaut ...
- Physics - 1.) A ball is thrown straight upwards at a speed of 32.5 m/s and from ...
- physics - A 94- astronaut and a 1200- satellite are at rest relative to the ...
- physics - A 82-kg astronaut and a 1300-kg satellite are at rest relative to the ...
- Physics - A 90 kg astronaut and a 1100 kg satellite are at rest relative to the ...