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15 questions
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
If an object weighed 44kg and had a force of 132N applied to it, would it accelerate faster or slower than an object weighing 210kg with a force of 630N applied?
Faster
Slower
The same
when the knee is flexed in preperation to kick a ball, what is acting as the resistance/weight?
the knee
the thigh
the lower leg
torso
What lever is likened to a wheelbarrow?
2nd class
3rd class
1st class
when preparing to throw a javelin, the arm is straight behind the body. What muscle is acting as the effort/force
wrist extensors
tricep
bicep
deltoid
What force DOES NOT act on a football to slow it down once it is kicked
Wind resistance
Friction
Gravity
Humidity
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