It's All Relative
A point against which direction is measured.
What is a reference point?
The length of a path between two points.
What is distance?
This tells you how quickly an object moves in relation to a reference point.
What is speed?
The slope of a distance-time graph indicates this.
What is speed?
What is the acceleration of an object that moves with a constant velocity?
What is zero?
Using a reference point to detect motion.
What is a frame of reference?
The distance an object travels plus the direction from the starting point.
What is displacement?
This tells you how quickly and in what direction the object is moving in relation to a reference point.
What is velocity?
Acceleration on a distance-time graph is indicated by this.
What is a curved line.
A rabbit is running east at 5.4 m/s and an eagle is pursuing at 4.4m/s. What is the relative velocity of predator and prey?
What is 1.0 m/s?
5.4m/s - 4.4m/s=1.0m/s
The branch of science devoted to the study of motion.
What is mechanics?
A physical measurement that contains both magnitude and directional information.
What is vector quantity?
The equation- distance over time equals this.
What is speed or velocity?
When a graph has a negative slope it is showing this.
What is negative acceleration?
A car traveled 80 km in 1 hr, 90 km the next hour and 110 km in the next 2 hours before arriving to their destination. This was the car's average speed.
What is 70 km/h?
80km + 90km + 110km=280km
1 hour +1 hour + 2 hours = 4 hours
280 divided by 4 = 70 km/h
One of the most important concepts in all of physics.
What is all motion is relative?
A physical measurement that contains only magnitude and does not contain directional information.
What is scalar quantity?
The SI unit of speed is measured in this.
What is meters per second?
On a distance-time graph for acceleration, a flat horizontal line shows this.
Answer pg 215
What is constant speed?
How many miles per hour does a car travel if it makes a 40 mile trip in 30minutes?
What is 80 mi/h
30 mins = .5h
40mi divided by .5 hr = 80 mi/h
He used the presence of motion as one of his five arguments for the existence of God.
Who is Saint Thomas Aquinas.
If a person walks 6 miles east then turns around and walks 2 miles west, what is their total displacement?
What is 4 miles east?
The ratio of the total distance traveled to the total time of the trip.
What is average speed?
On a distance-time graph for speed, a flat horizontal line shows this.
Answer pg 198
What is that the object is a rest?
What is the velocity of a bicycle in m/s if it travels 1km west in 4 mins?
What is 4.17 m/s west
4min = 240 seconds
1 km= 1000 m
1000m divided by 240 = 4.17 m/s west