Describing Motion
The place from which you observe an event
What is a reference point?
3 m/s North is and example of
What is velocity?
The formula for acceleration is _______
What is (Vf -Vi)/t
A curved line on a distance vs time graph
What is accelerating?
The variable you graph on the x-axis
What is the independent variable?
When an object is in motion it must be undergoing a change in _______
What is position?
The distance an object moves per unit of time
What is speed?
The horses on a carousel or merry-go-round are accelerating because ____.
What is changing direction?
A horizontal line on a distance vs time graph
What is stopped?
A prediction you make that can be tested with an experiment
What is a hypothesis?
The speed you see on a speedometer
What is instantaneous speed?
A biker travels 4 km in 1.2 hours...Her average speed is ________
What is 3.3 km/hr
The three accelerator in your car are ______-
What are gas, brake and steering wheel?
A line with a negative slope on a velocity time graph
What is slowing down or decreasing velocity?
A well tested explanation of a natural phenomena
What is a theory?
The distance and direction you have traveled from a beginning point
What is displacement?
8. A high-speed train travels with an average speed of 227 km/hr. The train travels for
2 hrs. The distance traveled is __________
What is 454 km?
When a car traveling at 30 m/s hits the gas pedal, it speeds up to 65 m/s in 3.5 sec. The car’s
acceleration during that time is ___________
What is 10 m/s/s?
A horizontal line on a velocity vs time graph?
What is moving at a constant speed?
In an experiment the group that gets the normal treatment
What is the control group?
The total path length you have traveled
Distance
A group of bike riders took a 4 hour trip. During the first 3 hours, they traveled a total of 50 km, but during
the last hour they traveled only 10 km. The average speed for the trip is____________
What is 15 km/hr?
The velocity of a car change when its speed is constant and it is _____________
What is changing direction?
A parabola shaped line on a distance vs time graph
What is accelerating?
A statement that describes or predicts a natural phenomenon based on repeated observations or experiments.
What is a scientific law?