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Gravitation 6okt 2020

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.

The value of Universal Gravitational constant is

a)

6.673X10-11 Nm-2kg2

b)

6.673X10-11 Nm2kg2

c)

6.673X10-11 Nm2 kg-2

d)

6.673 x10-11 N m-2 kg-2

2.

Newton said that any two masses will...

a)

combine into a larger mass.

b)

attract each other.

c)

create gravitational fields.

d)

push each other apart.

3.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
4.
Which of the following is Newton's Law on Gravitation?
a)
F=Gm1m2/r
b)
F = Gm1m2/r2
c)
F = Gm1m2/2r
d)
F = m1m2/2r
5.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
6.

The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?

a)

Object A

b)

Object C

c)

A and C exert an equal force on B

d)

Cannot be determined

7.

The picture shows two identical satellites, A and B, in circular orbits around the Earth. Upon which satellite does the Earth exert a stronger gravitational force?

a)

Satellite A

b)

Satellite B

c)

Equal on both

d)

Cannot be determined

8.

The figure shows the gravitational field surrounding the Earth. Which of the following explains why the field lines point towards the Earth?

a)

Gravity is an attractive force.

b)

The force of gravity points towards the center of the Earth.

c)

Falling bodies accelerate towards the center of the Earth.

d)

All of the above.

9.
Jupiter is a much more massive planet than Earth. If you traveled to Jupiter, your mass would
a)
increase
b)
decrease
c)
remain the same
10.

If the distance between 2 masses is increased then the force of gravitation between them will...

a)

increase

b)

decrease

c)

stay the same

11.
A satellite which takes 24 hours for 1 complete orbit is called a
a)
polar satellite
b)
geostationary satellite
12.

The velocity a rocket must reach to escape from a planet or moons gravitational pull

a)

Vacuum

b)

Satellite

c)

Escape velocity

d)

Geosynchronous orbit

13.

An object that revolves around another object in space

a)

revolving

b)

Meteoroid

c)

satellite

d)

vacuum

14.

An orbit in which a satellite orbits earth at the same rate as earth rotates and thus stays over the same place all the time

a)

Space spinoff

b)

Orbit Velocity

c)

Geosynchronous orbit

d)

Satellite

15.

A field that will apply a force to an object with mass is called a

a)

gravitational field

b)

Newton's field

c)

angular rotation field

d)

force field

16.
The definition of gravitational field strength is:
a)
The region of space surrounding a body where other bodies will feel an attractive force due to it.
b)
The region of space surrounding a body where other bodies will feel an repulsive force due to it.
c)
The region of space surrounding a charge where other charges will feel an attractive force due to it.
d)
The region of space surrounding a charge where other charges will feel an repulsive force due to it.
17.
The closer together the gravitational field lines.....
a)
the weaker the gravitational field strength
b)
the stronger the gravitational field strength
c)
the more repulsive the gravitational field strength
18.
Gravitational field strength is measured in:
a)
N
b)
J/kg
c)
m/s
d)
N/kg
19.
How far out from a mass should the gravitational field lines go....
a)
to where the gravitational field becomes negligable
b)
to twice the diameter of the mass
c)
infinitely far
d)
to four times the diameter of the mass
20.
The gravitational field strength of Earth is...
a)
uniform far away from the surface and radial close to the surface
b)
uniform close to the surface and radial far away from the surface
21.

In the formula g=Gm1/r2 what is the relationship between g and r?

a)

direct relationship

b)

inverse relationship

c)

inverse square relationship

d)

direct square relationship

22.
If you drop a stone into a hole drilled all the way to the other side of Earth (neglect the molten core), the stone will
a)
come to an abrupt stop at Earth's center.
b)
speed up until it gets to Earth's center
c)
speed up until it reaches Earth's other side.
d)
slow down until it reaches Earth's center.
23.

Compute g for the surface of a planet whose radius is double that of Earth and whose mass is triple that of Earth.

g on earth's surface is

a)

1.64 m/s2

b)

7.36 m/s2

c)

9.81 m/s2

d)

14.7 m/s2

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