Definitions
Velocity
Acceleration
Slopes
Describing Motion
100
The change in a position is referred to as __________, and uses the units of meters.
What is distance?
100
The formula for velocity.
What is velocity = distance/time ?
100
The formula for acceleration
What is (Vf-Vi)/t
100
The slope of a position vs time graph
What is velocity
100
Describe the motion of the object of the following graph:
Object is not moving
200
This term is used to describe an objects change in position (distance) traveled over time, including the direction the object has traveled.
What is velocity?
200
The speed of a squirrel that travel from his nest to a pile of acorns two meters away in 40 seconds. INCLUDE UNITS!
What is .05 m/s ?
200
The acceleration of a car that increases from 4.0 m/s to 12.0 m/s in 4.5 s. INCLUDE UNITS!
What is 2.3 m/s/s
200
The slope of a velocity vs time graph
What is acceleration
200
Describe the motion of the following object:
Hint: Is it traveling positive or negative? Is the velocity constant or is the velocity changing (accelerating)?
Object is moving in a positive direction at a constant velocity.
300
The rate an object changes speed over time.
What is acceleration?
300
The distance of a car that starts at a location marked at 15 m and ends at 45 m. INCLUDE UNITS!
What is 30 m?
300
The time is takes for a car to slow down from 52 m/s to 15.0 m/s at an acceleration of -5.1 m/s/s. INCLUDE UNITS!
What is 25.2 s
300
The slope of the following graph: (0,1) (1,3)
What is 2/1 = 2
300
How can you tell if an object is accelerating on a position-time graph?
If the lines are curved!
400
The measure of the steepness of a line on a graph, usually found by calculation a graph's "rise/run".
What is slope?
400
The distance of a squirrel that travels from his nest to a pile of acorns. The trip takes 5 seconds at an average velocity of 15 m/s. INCLUDE UNITS.
45 m (45 meters)
400
The distance traveled of a train that accelerated from 10m/s to 30 m/s in 15.0s. INCLUDE UNITS!
What is 300 m?
400
Sketch a graph of a velocity vs time graph of an object that would have an object slowing down in the negative direction.
What is
400
Describe the motion of the following object:
Object is speeding up in the positive direction.
500
The units for acceleration.
What is m/s2 ?
500
The time it takes for a train that travels from Paris to Grenoble at an average velocity of 90 m/s. The distance between the two cities is 900,000 m. INCLUDE UNITS!
What is 100,000 seconds?
500
A car is traveling initially at 2 m/s. It accelerates at 4m/s/s in 2 seconds. What is the cars final velocity? INCLUDE UNITS!
4 = (Vf-2) / 2
Vf = 10 m/s
500
Sketch a position-time graph that shows an object slowing down in the positive direction.
What is
500
The object (A-D) with the largest velocity.
What is A?
Remember: Velocity is both positive and/or negative. Even though A is negative, because it has the steepest slope, it is still the object with the largest velocity.