A geostationary satellite is one that

travels faster so that it has the same period as the Earth

Kepler's Law of Equal Areas says planets "sweep" out equal areas for equal time intervals. So

planets travel faster when closer to the sun

Kepler's 3rd Law can be used to calculate the T or r of satellites as long as

both satellites orbit the same central body

A satellite's orbital radius is equal to

distance from its centre to the centre of the central body

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Gravitational Fields

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Quick review or Kepler's Laws and Newton's Universal Gravitation for Grade 12 Physics

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Questions 10

Answers

1
Universal gravitation equals
7.76x10-11Nm2/kg2
6.02x10-23Nm2/kg2
6.67x10-11Nm2/kg2
9.8m/s2
2
A geostationary satellite is one that
is stationary while Earth rotates
travels aty the same speed as the Earth
travels faster so that it has the same period as the Earth
is made by General Motors
3
Kepler's Law of Equal Areas says planets "sweep" out equal areas for equal time intervals. So
its summer when the planet is closer to the sun
planets travel faster when furthest to the sun
planets travel faster when closer to the sun
planets travel a a constant speed
4
Who determined the value of Universal Gravitation constant?
Kepler
Newton
Gallileo
Cavendish
5
How is Fg changed if the m of the central body and its orbital radius are both cut in half?
Fg is 1/8x greater
Fg is 1/4x greater
Fg is x4
Fg is 2x greater
6
Kepler's Law states that all the planets orbit
in elliptical orbits
in circular orbits
Mrs Lubkey
the Earth
7
A rocketship is loaded with cargo so that its mass doubles how will that affect the F_g it feels
no change
it doubles
it is four times bigger
it is cut in half
8
If the rocketship is moved to a position 3 times farther away from the Earth, how is Fg changed
Fg is 9x greater
Fg is 1/3x greater
Fg is 3x greater
Fg is 1/9x greater
9
Kepler's 3rd Law can be used to calculate the T or r of satellites as long as
both satellites orbit the same central body
their periods are in seconds
they are natural satellites
both satellites are in the same galaxy
10
A satellite's orbital radius is equal to
distance from its centre to the surface of the central body
the distance from its centre to its surface
the central bodies radius
distance from its centre to the centre of the central body

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