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Physics
Test Description: Reviews terms related to the topics of motion, forces, energy, and simple machines
Instructions: Answer all questions to get your test result.
1) A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp
A
reduces the gravitational force on the box
B
reduces the amount of force applied to the box
C
increases the weight of the box
D
increases the amount of friction on the box
2) Which statement best explains how the pulley system in a crane makes work easier?
A
The pulley system reduces the volume of the object being lifted
B
The pulley system reduces the distance the object being lifted needs to move
C
The pulley system reduces the amount of force needed to lift an object
D
The pulley system reduces the mass of the object being lifted
3) Which simple machine uses a fulcrum to redirect a force?
A
wedge
B
inclined plane
C
lever
D
pulley
4) Which simple machine increases the distance over which a load travels and reduces the needed force?
A
wedge
B
pulley
C
wheel and axle
D
inclined plane
5) A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information?
A
friction reduces the amount of work used to move an object
B
friction opposes the direction of movement
C
friction makes movement of an object easier
D
friction increase mechanical advantage
6) When the roller coaster rolls onto a flat section of the track, what force would ultimately bring it to a stop if no other forces are added?
A
weight
B
friction
C
gravity
D
acceleration
7) What is the amount of force required to accelerate a 20 kg object to 5 meters per second squared?
A
4 N
B
0.25 N
C
15 N
D
100 N
8) One person pulls on a rope with a force of 400 N to the right. Another person pulls on the opposite end with a force of 600 N to the left. What is the unbalanced net force?
A
200 N to the left
B
400 N to the left
C
1000 N to the left
D
600 N to the left
9) Students observed a turtle in the schoolyard. They measured the distance that the turtle traveled in 30 minutes. If the turtle walked 40 meters in that time, what was its average speed?
A
20 m/s
B
1, 200 mph
C
0.75 mph
D
80 mph
10) A student walking quickly while carrying an orange on his lunch tray stops suddenly. The orange will most likely roll off the tray due to
A
inertia of the orange
B
the friction acting on the orange
C
the balanced forces acting on the orange
D
centripetal force of the orange
11) An airplane is flying with a net force of zero. This means the airplane is
A
moving at a constant speed and traveling along a straight line
B
slowing down and losing altitude
C
moving at a constant speed and losing altitude
D
slowing down and traveling along a straight line
12) Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen?
A
the rope will break
B
both girls will stay in the same place
C
one girl will pull the other toward her
D
gravity will cause the rope to snap
13) A teacher was discussing with the class that a bowling ball has more inertia that a basketball. Which physical property is most likely being compared?
A
weight
B
area
C
mass
D
volume
14) What do machines do?
A
increase the amount of work that is done
B
eliminate friction
C
change the amount of force you exert of the distance over which you exert the force
D
decrease the amount of work that is done
15) The mechanical advantage of a machine is the number of times a machine increases
A
the change in direction
B
the force exerted on the machine
C
the amount of friction
D
the distance an object is moved
*select an answer for all questions
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