Speed & Velocity
This formula is used to calculate speed.
speed = distance ÷ time?
What is the unit of acceleration?
m/s2
The x-axis (horizontal) on a distance vs. time graph represents what?
Time
What is distance
total path traveled
A series of images showing an object’s position at equal time intervals.
motion diagram
What is meant when an object is described as having a velocity of +9 m/s
The object has a velocity of 9 m/s in the positive direction
This type of acceleration happens when an object slows down.
negative acceleration
The y-axis (vertical) on a distance vs. time graph represents what?
Distance
Displacement always includes
direction
A simplified motion diagram that uses dots to show movement.
dot diagram
The difference between distance and displacement is that displacement includes
Direction
A car increases its speed from 20 m/s to 30 m/s in 5 seconds. What is its acceleration?
2 m/s²
A straight slanted line on a distance-time graph shows this type of motion.
You walk 5 km to the store and then walk back home. What is the total distance traveled?
10 km
Dots close together on a motion diagram show this.
slow speed
A runner makes one lap around a 200 meter track in a time of 25 seconds. What is the runner’s speed?
8 m/s
A train accelerates from 15 m/s to 25 m/s in 10 seconds. What is its acceleration?
1 m/s²
A curved line on a distance-time graph usually means this.
speeding up or slowing down
You walk 5 km to the store and return home. What is the displacement?
0 km
Dots farther apart on a motion diagram show this.
faster speed
An object travels 444 km EAST during a 7.0 hr period. What was the velocity of the object?
63.4 km/hr EAST
Acceleration occurs when an object changes speed, direction, or _______?
velocity
slope of a distance-time graph represents this
speed
Distance is a scalar, while displacement is this type of quantity.
vector
Increasing spacing between dots shows this type of motion.
speeding up