Biomechanics

What is the correct definition of Newton's Law of Inertia

• The acceleration of a body is proportional to, and in the same direction as, the unbalanced force applied to it

• An object either remains at rest or continues to move at a constant velocity, unless acted upon by a some external force

• For every action there is an equal and opposite reaction

a 2nd Class Lever has what in the middle

• Fulcrum

• Effort/force

• Resistance/weight

What is the equation used in Newton's law of acceleration?

• a = f x m

• f = m x a

• m = f x a

What is Newton's First Law also known as?

• The law of reaction

• The law of inertia

• The law of acceleration

For a first class level, the fulcrum is placed

• Between the effort/force and resistance/weight

• Effort/force in the middle with fulcrum on one end and resistance/weight on the other

• Resistance/weight in the middle with fulcrum and effort/force on the ends

Using Newton's formula for acceleration, how much mass does an object have if its acceleration is 80 m/s and the force applied was 24N

• 19.2 kg

• 0.3 kg

• 30 g

Standing on your toes is an example of what lever

• 1st class

• 2nd class

• 3rd class

What law best describes the action when a high jumper is pushing off the ground before the jump?

• Newton's 1st law (inertia)

• Newton's 2nd law (acceleration)

• Newton's 3rd law (reaction)

What class lever occurs at the neck when nodding your head

• 1st class

• 2nd class

• 3rd class

What class lever is the arm using when a dart thrower is holding a dart up getting ready to throw?

• 1st class

• 2nd class

• 3rd class