Force Diagrams
What does the length of an arrow tell us in a force diagram?
The strength of the force
Action and ____________ forces.
Reaction
For every action there is an equal and opposite reaction
Newtons' third law
A rocket pushes burning gases down which causes the rocket to launch up
Newton's 3 law
What is the name for the element with a chemical symbol Fe?
iron
What is a vector?
An arrow with direction and magnitude
Forces must be _________ in magnitude.
equal
A push or a pull that changes an object's motion
Force
A sports car speeds up much faster than a dump truck when a traffic light turns from red to green.
Newton's second law
How many protons are in calcium, Ca?
20
Draw the force diagram for a bowling ball striking a pin with a force of 210 N.
Bowling ball and pin with have arrows in opposite directions of 210 N.
Forces act in ___________ directions.
opposite
This is always equal and opposite to the action force
Reaction
A skateboarder pushes the ground backward which causes the board to move forward.
Newton's third law
This is the chemical symbol for the element in group 13 period 4
Ga
A person kicking a soccer ball with 207 N of force.
See example
Objects must be acting on _____________ objects in the action-reaction pairs.
different
To strike or hit something with great force
collide
When a mule stops suddenly, the packages on its back continue moving forward onto the ground.
Newton's first law
What is Ms. Larson's favorite element?
Yttrium, Yt
A bird's wings flapping against the air with a force of 400 N.
See example
The force that objects have to oppose gravity when just sitting.
Normal Force
A change in position of an object relating to time
Motion
A book sitting on a table does not move
Newton's first law
Name 3 of the seven diatomic elements
H, N, O, F, I , Cl, Br