Speed/Velocity
Speed/Velocity Calculations
Acceleration
Acceleration Calculations
Graphs and Units
100
What is speed?
The rate at which an object moves a certain distance.
100
What is hte velocity of a jogger that ran 300 meters in 50 seconds and moves forward?
6 m/s forward
100
Unit of acceleration
m/s2
100
What is the acceleration of an object with an initial velocity of 6 m/s and a final velocity of 20 m/s in 2 seconds.
7 m/s2
100
Units for speed and velocity.
m/s
200
What is velocity?
The speed object moves in a specific direction.
200
What is the distance an object travels if the velocity is 2 m/s and the time is 15 seconds?
30 meters
200
What variable is placed in the x-axis of an acceleration graph?
time
200
A runner goes from 0 m/s to 8 m/s in 4 seconds what is the acceleration?
2 m/s2
200
What does the graph show in terms of acceleration?
The object is accelerating
300
The 2 variables needed to calculate speed.
distance and time
300
What is the distance an object travels if going a velocity of 8 m/s in 28 seconds.
224 meters
300
The formula (equation) for acceleration is:
(final velocity - initial velocity) / time
300
A car is traveling at 60 m/s when the driver hits the brakes. The car slows to a stop in 5 seconds. What is the car's acceleration?
-12 m/s2
300
What is the motion of the object in this velocity vs. time graph?
constant velocity
400
In a graph what does a flat or horizontal line represents.
This position vs. time graph represents an object that is at rest (not moving).
400
The velocity of an object that travels 45 meters in 3 seconds to California is:
15 m/s to California
400
What is the unit of time in the acceleration formula?
s2
400
The acceleration of an object starting from rest with a velocity of 98 m/s in 7 seconds.
14 m/s2
400
Name the 2 types of acceleration:
Positive and negative acceleration or acceleration and deceleration.
500
What is acceleration?
The rate at which velocity changes in a certain amount of time.
500
The time it takes an object to travel 198 meters at a velocity of 18 m/s is:
11 seconds
500
Acceleration occurs when an object speeds up, slows down, or __________ .
Changes direction
500
The acceleration of an object that slowed down from 100 m/s to 20 m/s in 40 seconds.
- 2 m/s2
500
What does line A represents on this position vs. time?
Decreasing speed