AnswersGA-Personal FitnessUnit Test

Movement Answers

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1
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What lever has resistance between the axis (fulcrum) and the force (effort)?

A
first
B
second
C
third
D
fourth
2
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Force is based upon both mass and acceleration.

A
T
B
F
3

What distinguishes the three different classes of levers found in the human body?

A
where they are located in the body
B
how useful they are for performing work
C
where the components of the lever are located
D
how many moving parts the lever has
4

The elbow is considered a third class lever because __________.

A
the effort is applied further from the fulcrum than the load
B
the effort is applied closer to the fulcrum than the load
C
the fulcrum is in the center of the lever
D
the elbow is used to lift objects
5

What distinguishes mass from weight?

A
Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on the object.
B
Weight is a measure of the amount of matter in an object, while mass is a measure of the force of gravity on the object.
C
Mass is a measure of an object's inertial force, and weight is the force exerted by that object on other objects.
D
Mass and weight are synonyms and ultimately describe the same principle.
6

The ankle is a third class lever.

A
T
B
F
7

According to Newton's second law of motion, force is equal to mass times acceleration.

A
T
B
F
8

What is BEST to say about a runner who is running at a constant velocity?

A
Their acceleration is positive.
B
Their acceleration is negative.
C
Their acceleration is zero.
D
Their acceleration cannot be determined.
9

What is the difference between velocity and acceleration?

A
Velocity describes an object's position and acceleration describes how fast it moves.
B
Velocity is how fast an object moves and acceleration is the rate of change in velocity.
C
Velocity is used to determine the magnitude of force acting on an object, and acceleration isn't.
D
Velocity is a time-dependent property of an object, while acceleration is not.
10

The first class lever is the most common lever in the human body.

A
T
B
F

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