Posted by **Cooper** on Wednesday, November 9, 2011 at 4:08pm.

An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3800 km. When the astronaut jumps upward with an initial speed of 4.00 m/s , she rises to a height of 0.600 m.

What is the mass of the planet?

- Physics -
**bobpursley**, Wednesday, November 9, 2011 at 4:12pm
Force/Massperson= a= GMass/radius^2

Now, at the top of the jump, velocity is zero, so vf=0=4-at or t= 4/a

heightmax= 4t-1/2 a t^2

.6=16/a-1/2 16/a= 8/a

a= 8/.6= GMass/radius^2 now solve for Mass

## 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 - On Planet X, an astronaut has maximum walking speed of 1.9 m/s. The ...
- 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 ...

More Related Questions