Movement Answers

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The elbow is considered a third class lever because __________.

the effort is applied further from the fulcrum than the load

the effort is applied closer to the fulcrum than the load

the fulcrum is in the center of the lever

the elbow is used to lift objects

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Which of the following is NOT a component of a lever?

effort

tension

fulcrum

load

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

where they are located in the body

how useful they are for performing work

where the components of the lever are located

how many moving parts the lever has

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

first

second

third

fourth

Second and third class levers are differentiated by __________.

the location of the fulcrum

the location of the load

the presence of multiple loads

the type of fulcrum present

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

The load is the pivot point of a lever.

What is the difference between velocity and acceleration?

Velocity describes an object's position and acceleration describes how fast it moves.

Velocity is how fast an object moves and acceleration is the rate of change in velocity.

Velocity is used to determine the magnitude of force acting on an object, and acceleration isn't.

Velocity is a time-dependent property of an object, while acceleration is not.

The ankle is a third class lever.

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

Their acceleration is positive.

Their acceleration is negative.

Their acceleration is zero.

Their acceleration cannot be determined.

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