# Period, velocity, gravity Problems #2A 2020

```Name: _______________________
Per. ___________ Date: __________
Use the data in table 7-1 on page 173 from your Physics book to calculate the following:
1. A Nasa’s Aqua satellite orbits the Earth 705 km above its surface.
a) What is the satellite orbital velocity?
V=75031.1m/s
b) What is the satellite orbital period of the satellite?
V=1010.8m/s
2. A moon orbits the Earth 3.84 X 108 m above its surface.
a) Calculate the orbital period of the satellite. (seconds, hours and
days)
2426597 seconds 674.0547883 hours 28.085616 days
b) Calculate the orbital velocity of the satellite.
1010.810464 m/s
3. NASA wants to send a satellite to be in a Geostationary (the
satellite needs to rotate with the Earth at the same time)
orbit above the Earth’s surface.
a) What is its orbital velocity?
b) What distance must the satellite be from the Earth’s surface?
c) Calculate the orbital period of the satellite. (seconds, hours and days)
4. A Weather satellite is in orbit 3.6 X 106 m above the
surface of Earth..
a) What is the satellite orbital velocity?
V=6321.91 m/s
b) What is the satellite orbital period of the satellite?
Use the following equation to find the gravity value of the following
planet:
g = Gm
r2
Where m is the mass of the planet and r is the radius of the planet.
5. What is the value of gravity for the planet Jupiter?
6. Find the value of gravity for Mercury
7. Find the value of gravity for Neptune
8. The asteroid Ceres has a mass of 7 X 1020 kg and a radius of 500 km.
a. What is the value of gravity on Ceres?
b. How much would a 90 kg astronaut weigh on
Ceres?
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