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
How long does it take the earth to rotate on it's axis?
24 hours
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
How long does it take for the earth to revolve around the sun?
365 day
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?
The time between today's sunset and tomorrow's sunset would be about how long?
24 hours
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.)
The changes of Earth's seasons are caused by:
The tilt of the earths axis
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. Pace 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.
List the planets in our solar system in order. (Extra points if you remember the acronym used in class.)
My Very Excited Mother Just Served Us Nachos
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune