Motion 101
Kinetic energy is the energy of ______.
motion
What is a hypothesis?
An educated guess made before an experiment.
____ is any push or pull that causes an object to move, stop, or change speed, direction, or shape.
Force
________ is a force that works against the motion of an object
Friction
True of false: A soccerball at rest of the floor is showing kinetic energy.
false
What is an independent variable?
The factor that I (the experimenter) purposefully change
If I were to use the same force to push a car, a sofa, and a chair, which would move the furthest?
chair
True or false: A kid rubbing their hands together is an example of friction
true
What measuring tool could be used to calculate speed?
Hint- You would need to measure time and distance.
Time: Stopwatch
Distance-Meter Stick
What is a dependent variable?
The factor that changes because of the independent variable.
If there were 2 toddlers playing tug of war against 2 adults, would the forces be balananced or unbalanced?
Unbalanced
Assuming they can generate the same force, who would have a greater speed- someone rollar blading on asphalt or at a roller rink? Why?
True or False: An example of kinetic energy could be a kid rolling down the hill during recess.
True
When looking at a graph:
What axis is the independent variable on?
What axis is the dependent variable on?
Independent Variables are on the X-axis
Dependent Variables are on the Y-axis
Would it require more force to pick up an empty suitcase or a full suitcase?
Full suit case
Newton's 1st law states that an object in motion stays in motion unless acted upon by a force. If i roll a yogaball on carpet, why does it eventually stop? What is the force?
The force is the friction produced by the surface (carpet.)
Which describes a car that is changing its motion?
a. A car that is slowing down at a red light
b. A car that is stopped at a red light
c. A car that is moving at a constant speed
a
In our collision investigation, what was our independent variable?
The size of the balls because that was the element of the investigation that the experimenter purposefully changed.
If Ms. Nichol was playing tug of war with a clone of herself and they were both applying the same amount of force on each side, what would happen to the rope? Are the forces balanced?
It would not move. The forces would be balanced.
What would cause more friction- sliding a book on carpet or ice? Why?
Carpet. Ice has a smoother surface than carpet.