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Motion Review
• Game Code: 37335
•  34    Public
Distance, Displacement, Scalar, Vector, Speed, Rate, Velocity, Acceleration, Graphing Motion

agorat
• Define vector.
A quantity that includes both magnitude (size) and direction.

•  5
• Define scalar.
A quantity that includes only magnitude (size).

•  5
• How can you tell an object has moved?
The object's position changes compared to a reference frame.

•  10
• Which term(s) is(are) scalar: distance, displacement, speed, rate, velocity, acceleration
distance, speed, rate

•  15
• Define distance.
Total length of an object's path.

•  5
• What is displacement?
An object's ending position compared to its starting point.

•  10
• How quickly an object is moving at a certain time is its...
instantaneous speed

•  15
• When does an object's velocity change?
speed up, slow down, change direction

•  15
• What is negative acceleration?
slowing down

•  5
• What is positive acceleration?
speeding up

•  5
• How do you calculate average speed?
total distance divided by total time

•  15
• What is the unit for speed?
m/s

•  10
• What is the unit for distance?
m (km)

•  10
• What is the unit for acceleration?
m/s/s

•  10
• What is the unit for rate?
m/s

•  10
• What is the unit for velocity?
m/s + direction

•  15
• Explain why a car turning a corner at a constant speed of 20 m/s is not traveling at a constant velocity.
Because the direction of the car is changing, velocity is not constant (vector).

•  15
• What does a horizontal line on a distance vs time graph represent?
motionless

•  10
• What does a diagonal, straight line represent on a distance vs time graph?
constant speed

•  10
• What does a curved line represent on a distance vs time graph?
non-constant speed (acceleration)

•  10
• What does a horizontal line above the x axis represent on a speed vs time graph represent?
constant speed

•  10
• What does a horizontal line on the x axis on a speed vs time graph represent?
motionless

•  10
• What does a straight, diagonal line represent on a speed vs time graph?
constant acceleration

•  10
• What does negative slope represent on a speed vs time graph?
slowing down

•  10
• What does negative slope represent on a distance vs time graph?
going back to start

•  10
• How do you calculate distance?
Add up all of the lengths to get a total distance.

•  10
• What does "delta v" represent?
change in velocity (final velocity minus initial velocity)

•  15
• Explain why rate and speed are considered the same thing.
Both divide distance by time.

•  10
• Explain the motion of the object in the graph.
slow constant speed away from start, stopped, slow constant speed away from start, fast constant speed home

•  25
• Calculate the speed of the object during the third section of movement
S=? D=30m T=3s S=D/T S=30m/3s S=10m/s

•  25
• Describe the motion of the object using the graph.
accelerating quickly, constant speed, slow acceleration, slow deceleration

•  25
• Describe the acceleration of the object using each section of the graph
positive, zero, positive, negative

•  20
• Explain the difference between speed and acceleration.
Speed only considers the distance and object moves in a given time, which acceleration includes how quickly the speed is changing in a given time with direction

•  20
• Draw a graph for a person who walks up a hill at a constant speed, across the top, and down the other side.
See Graph on Board

•  25