The scientific method
What is a hypothesis?
An educated guess about what you think the solution to the problem that you are trying to solve is
What is a scalar?
A number with magnitude only
What is a limit in everyday language?
A limit is something that we cannot cross.
For example, a limit on spending is an amount that you should not spend more than
How many meters are in 2 kilometers?
2,000 meters
Which vector component describes horizontal motion?
The X component
What is an experimental control?
A control is what you compare your results to within an experiment
What is a Vector?
A number with both magnitude and direction
What is a limit in mathematics?
A limit is a tool that we can use to approximate a point. We can get really close to a point, but we cannot cross the point.
How many seconds are in 1 day?
86,400 seconds
Which vector component describes vertical motion?
The Y component
How do vectors add together?
Tip to tail. They are arrows!
What does it mean to derive something?
Deriving something means that it came from something.
For example, a wooden chair is derived from a tree
A car is traveling 36 (km/hour) what is the speed of the car in (meters/second)?
10 (meters/second)
What are independent and dependent variables?
Independent: What is in your control and what you can change.
Dependent: What you cannot control and is dependent on the independent. Often what is being measured.
What is the difference between displacement and distance?
Distance is the total distance traveled and is path-dependent.
Displacement is the distance between the starting point and finishing point, it is not path dependent.
What is the derivative of distance/displacement?
Speed/velocity
A jet is traveling at 1 (km/sec) what is the speed in (km/hour)
3600 (km/hour)
Why did the 45 degree angle allow the ball to travel furthest?
It maximized both the X and Y components of the balls motion
What are the 6 steps of the scientific method?
Question, hypothesis, experiment, data, analysis, and report
A car travels 4 km west, and 3 km south. What is the displacement and distance the car traveled?
Distance- 7km
Displacement- 5km
How can a limit help calculate the derivative of a specific point on a curvy graph?
A limit gives 2 points that are very close to the point, 2 points are needed to calculate slope, slope=derivative.
Convert 7 (km/hour) into (meters/second)
1.94 (meters/sec)