Motion
The object that appears to stay in place.
Reference Point
The rate at which an object moves.
Speed
The unit that scientists use to express force.
Newton (N)
Which fruit did Newton observe falling, that lead him to discover gravity?
Apple
Name the two axis that you must have in order to graph, currently in this class.
X-axis and Y-axis
When an object changes position over time when compared with a reference point
Motion
Defined as speed with direction.
Velocity
define what a force is in tree words.
push or pull
Which came first Physics or Calculus?
Physics, calculus was created to explain the science with math.
The rate at which velocity changes.
What is Acceleration.
List one of the three common reference points discussed in the reading.
What two measurements must you have to determine speed?
Distance and Time
The force that results from combining all the forces exerted on an object.
Net Force
When forces are moving in opposite directions do you add, subtract, multiply or divide them?
You subtract them when they are going in opposite directions.
Does change in directions affect acceleration?
Yes, a change in direction changes velocity and thus changes acceleration.
in order to determine motion, you must have these two things.
A moving object and a reference point
What two things must you know in order to determine Velocity?
Speed and Direction
Who is credited with the discovery of Force?
Isaac Newton
When forces are moving in the same direction do you add, subtract, multiply or divide them?
You add them when in the same direction.
If a car travels 3,000 meters in half a minute. What is their speed in meters per second?
100 meters per second.
Which object in this classroom is constantly in motion?
Hint: it moves every second
Common unit for Speed and Velocity we have used in this class (for the lab).
meters per second (m/s)
When the net force on an object is not zero.
Unbalanced force
seconds and minutes
You are at the airport and are late for your flight. You see one of those moving floor conveyor belts and notice that its moving at 5 m/s. You know that you can walk at a max speed of 10 m/s. If you are moving in the same direction, what is your max speed if you use the conveyor belt and walk at max speed?
10 m/s + 5 m/s = 15 m/s