Free body diagrams
A free body diagram uses these to show forces.
Arrows.
Variables that you manipulate or change are called what?
Independent variables
Kinetic energy increases when what two variables increase?
speed and mass
If I drag my shoe across the floor, what contact force is stopping my shoe?
Friction
A free body diagram has these many objects in each diagram.
one
Variables that is being tested in an investigation or that results from a changing a variable.
Dependent Variable
Higher KE results in ________ peak force.
Higher
Air resistance
A lower mass object takes how much force to get it to move?
less force
To show a that a force is stronger, the arrow in your free body diagram should be what?
Longer
What are variables you keep the same in an experiment?
Control/Constant Variables
The more KE an object has, the more of this an object will have in a collision (not peak force)
Damage
What happens to KE of a ball going through air resistance?
energy transfers from the ball to the air particles.
A higher mass object takes how much force to get it to move at the same speed as a lower- mass object.
more force
If you wanted to show a ball being thrown to someone else, what different forces would you show that is hitting the ball as it is thrown?
Air Resistance forces
If I wanted to test what bowling surface is the best for bowling, what would be my independent variable?
Different surfaces
This variable is proportionally related to KE. If this variable increases by a certain amount, KE will also increase the same amount.
Mass
DAILY DOUBLE: What causes an object to lose KE when going through air resistance?
Energy transfer from contact forces between the object and air particles.
When contact forces occur between two objects, what always happens as a result?
energy transfer
Which way would the forces of friction or air resistance go on an object going in one way?
The arrows for friction or air resistance would go the opposite way.
If i wanted to test if certain bowling surfaces were best for bowling a high score, what would be my dependent variable?
Which variable is the most important factor in increasing/decreasing KE?
speed
What always results when there is energy transfer from an object due to friction or air resistance?
Temperature rises or energy decreases from the moving object to friction or air resistance.
Why does swing speed decrease when you try to swing a heavier object if you swing the object with a same force as a lighter object?
It takes more force to swing a heavier object. If you have a smaller force to move a heavy object, speed will slow down.