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WorksheetsForces: Friction & Gravity
Total questions: 31
Worksheet time: 21mins
Name
Class
Date
1.
Two objects - one with mass m and the other with mass 2m - are released from rest at the same height. Which object hits the ground first?
a)
mass m
b)
mass 2m
c)
both objects hit the ground at the same time
d)
unable to determine with information given
2.
Gravitational force between two massive spheres
a)
is always an attraction
b)
depends on how massive they are
c)
depends inversely on the square of the distances between them
d)
all of the above
3.
If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?
a)
Doubles
b)
Quadruples
c)
Cut in Half
d)
4x Smaller
4.
If I double the distance between two objects, what happens to their gravitational Force?
a)
4x bigger
b)
4x smaller
c)
2x bigger
d)
2x smaller
5.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
6.
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
7.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
d)
I don't care
8.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
9.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
10.
As distance between two objects increase the pull of gravity
a)
Increases
b)
Decreases
c)
Stays the same
11.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
12.
As distance separating the objects increases the force
a)
increases
b)
decreases
c)
stays the same
13.
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?
a)
F/3
b)
F/2
c)
F/6
d)
F/9
14.
The amount of matter in an object
a)
mass
b)
weight
c)
inertia
d)
gravity
15.
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
16.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
17.
What is the net force acting on the block?
a)
4 lbs to the right
b)
6 lbs to the right
c)
14 lbs to the right
d)
40 lbs to the right
18.
What makes a rolling ball stop moving?
a)
gravity
b)
friction
c)
a balanced force
19.
How can you explain that we have a stronger gravitational attraction with Earth than the Sun?
a)
The sun has a larger mass
b)
The sun has a smaller mass
c)
Closer to center of sun
d)
Closer to center of Earth
20.
Which of the following will not change in different gravitational fields?
a)
weight
b)
force
c)
mass
d)
pounds
21.
Which of these best describes why your weight (on Earth) would change on another planet?
a)
Dehydration effects on different planets change weight.
b)
In general, the smaller the planet, the greater weight
c)
Different planets have different gravitational pulls
d)
Weight does not change, no matter where you are.
22.
An object is falling but is not accelerating. What do you know?
a)
Gravity is stronger than air resistance
b)
Air resistance is stronger than gravity
c)
Air resistance is equal to gravity
d)
Forces are unbalanced
23.
Which object is in true Free Fall?
a)
The International Space Station
b)
A skydiver
c)
An airplane
d)
Monty
24.
What is the SI unit used to measure weight?
*remember the definition of weight!
*remember the definition of weight!
a)
Grams
b)
Liters
c)
Pounds
d)
Newtons
25.
An _______ force must act on an object for it to CHANGE it's acceleration.
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
26.
What two quantities must I know to calculate something's speed?
a)
time and weight
b)
position and distance
c)
distance and time
d)
distance and speed
27.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact?
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
28.
What is defined as a push or pull?
a)
force
b)
motion
c)
vector
d)
speed
29.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
30.
If the net force is equal to zero, the forces acting on the object are
a)
balanced
b)
unbalanced
31.
Balanced forces do not change the objects speed or
a)
direction
b)
distance
c)
time
d)
mass
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