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WorksheetsPhysics 1st Q Final
Total questions: 25
Worksheet time: 17mins
Name
Class
Date
1.
Science, art, and religion do not contradict each other because...
a)
all three have different domains.
b)
If you choose religion and art you can forget science .
c)
If you choose science you can forget religion and art.
d)
If you pick the right one you can forget the other two
2.
Which of these is a SCIENTIFIC hypothesis?
a)
the universe is surrounded by a second universe that cannot be seen.
b)
Albert Einstein is teh greatest physicist of all time.
c)
Atoms are the smallest particles of matter.
3.
In order for a hypothesis to be considered scientific there must be a test to prove it...
a)
right
b)
wrong
4.
A theory is a synthesis of a large collect of information including well-tested hypotheses.
a)
True
b)
False
5.
A hypothesis is the long side of a triangle.
a)
True
b)
False
6.
A 15N force and a 45N force act on an object in opposite directions. What is the net force.
a)
15N
b)
30N
c)
45N
d)
60N
7.
What is the maximum resulatant possible when adding a 2N and 8N force?
a)
2N
b)
6N
c)
8N
d)
10N
8.
What is the minimum resultant possible when adding a 5N force to an 8N force?
a)
5N
b)
3N
c)
8N
d)
13N
9.
Equilibrium occurs when
a)
all the forces are balanced.
b)
the sum of the +x forces = the sum of the -x forces.
c)
the net force is zero.
d)
all of the above
10.
A girl whose weight is 500N hangs from the middle of a bar supported by two vertical strands of rope. What is the tension in each strand?
a)
0N
b)
250N
c)
500N
d)
750N
11.
The weight of a person can be represented by a vector that acts
a)
in a direction dependent on where teh person is standing
b)
perpendicular to the ground underneath the person
c)
straight down, even if the person is standing on a hill.
d)
parallell to the ground.
12.
GET SOME SCRAP PAPER: A 21N flower pot hangs by three strings from the front porch. Each of the strings makes a 200 angle with the vertical. What is the tension of each rope supporting the pot?
a)
7.21N
b)
7.45N
c)
8.25N
d)
8.75N
13.
A scalar quantity has
a)
only direction
b)
only magnitude
c)
both magnitude and direction
d)
a time and place
14.
In order to find the components of a vector, you should
a)
draw the vector with correct manitude and direction
b)
draw a parallelogram using the vactor
c)
measure the side if drawn to scale
d)
all of these
15.
What is needed to describe a vector quantity?
a)
only magnitude
b)
only direction
c)
both magnitude and direction
d)
time and place
16.
The astronomer Copernicus publically states in the 1500s that the Earth
a)
The ball would not roll up the other plane at all.
b)
gravitational acceleration
c)
revolves around the sun
d)
is the center of the solar system
17.
Galileo found that a ball rolling down one inclined plane would roll how far up another inclined plane?
a)
The ball would not roll up the other plane at all.
b)
to the same height
c)
to nearly twice the original height.
d)
to nearly half its original height
18.
Friction is a force that always acts
a)
in the opposite direction of an object's motion
b)
with gravitational acceleration
c)
in the same direction as motion
d)
only when rolling downhill
19.
The law of inertia states that on object...
a)
will continue moving at the same velocity unless na outside force acts on it
b)
will continue moving in a straight line unless an outside force acts on it
c)
at rest will stay at rest unless acted on by an outside force
d)
all of these
20.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving.
21.
If the force of gravity suddenly stopped acting on the planets they would
a)
spiral slowly toward the sun
b)
continue in their orbits for a short time
c)
move in straight lines tangent to their orbits
d)
fly straight away from the sun
22.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gracitational acceleration
c)
inertia
d)
all of these
23.
Compared to its weight on Earth, a 10kg object on the moon is
a)
the same
b)
less
c)
more
24.
Which has more mass, a kilogram of feathers or a kilogram of iron?
a)
feathers
b)
iron
c)
neither
25.
The law of inertia applies to
a)
moving objects
b)
non-moving objects
c)
moving and nonmoving objects
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