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WorksheetsNewton´s 3rd Law of motion
Total questions: 22
Worksheet time: 11mins
What does Newton´s 3rd Law of motion say?
An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force.
For every action there is an equal and opposite reaction
Force equals Mass times acceleration
When Ronda Rousey got kicked in the face, What is the interaction pair?
Foot and the air
Foot and Ronda´s face
Ronda and the floor
What does Unbalanced force mean?
the action of one surface or object rubbing against another
Force equals mass times acceleration
a forces that changes the position, speed or direction of the object that it is applied to
What is Interaction?
relationship between two forces in an interaction
lacking movement, development, or vitality
a vehicle's capacity to gain speed within a short time.
a force is always part of a mutual action that involves another force
What law does this picture represent?
Newton´s 1st Law
Newton´s 2nd Law
Newton´s 3rd Law
What is inertia?
How much ¨stuff¨ an object has
The act of a push or pull
the resistance of any physical object to any change in its velocity
F=MxA
What is Net Force?
a force that occurs between electrically charged particles, such as electrons
Support by water or air
The sum of all forces acting on an object
the force air exerts against a moving object
What does acceleration mean?
The act of a push or pull on a object
support by a surface
increase in the rate or speed of something
Support by rope or string
What is Friction?
the action of one surface or object rubbing against another.
Acceleration
Support by water
Force
What does newtons mean?
Friction
A measurement of force
Acceleration
A measurement of Mass
What is Force?
Support by a surface
Weight
The act of a push or pull
Mass
What is F=ma?
Force
Force equals mass times acceleration
Newtons
Kilograms
What does Balanced Force mean?
Unbalanced Force
Support by water or air
two forces acting in opposite directions on an object, and equal in size
Action and Reaction
What is Action/Reaction?
Newtons
in every interaction, there is a pair of forces acting on the two interacting objects
Kilograms
Forces are produced in pairs with opposite directions and equal strengths
Why don't action-reaction forces cancel each other?
For every interaction between things, there is always a pair of oppositely directed forces that are equal in strength
A force is always part of a mutual action that involves another force
Action and reaction forces do not cancel each other when either of the forces is external to the system to the system being considered
equal in strength, but opposite in direction to the action force; it doesn't matter which one is called which
What will happen if the Action is greater than the Reaction?
The man will fall
The boat will sink
Nothing will happen
The boat will flip over
When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?
The cannon moving forward
The cannon moving backwards
The cannonball moving backwards
The cannonball moving forward
How is this an example of Newton’s Third law?
Only the ball is using the head
They are both exerting an equal force on each other
Only the head is pushing the ball
Action-reaction pairs can cause a change in motion.
True
False
The forces in a force pair are in _______ direction
opposite
same
Force always come in________
waves
triplets
pairs
