Vocabulary
Speed
Velocity
Units
Miscellaneous
100
When a driver glances at the speedometer in the car for just a second to see how fast she drives, she is checking what type of speed?
instantaneous speed
100
What is the formula for speed?
speed = distance / time
100
What is velocity?
Speed with direction
100
Name one unit of time.
second or minute or hour or day etc.
100
Where is Ms. Cveckova from?
Slovakia
200
Meters are SI units for what quantity that we have discussed?
distance
(or displacement, if direction is provided)
200
What is the speed formula when expressing the distance? d =
d = v . t
200
Is this velocity and why?
45km/h
No. It does not indicate direction.
(If we assume that there is plus in front of 45km/h then yes.)
200
What is SI unit of speed?
m/s
200
Does acceleration have direction?
Yes. It is a vector quantity.
300
How far is an object from the point of origin is a definition of a
displacement
300
Aisha decided to use the treadmill and sets the speed to 2m/s. She speed walks on the treadmill for 20 minutes at this pace. What type of speed was Aisha walking at?
Constant speed
300
Does this graph show velocity or speed?
Speed because the y axis has distance traveled over time and not position or displacement.
300
Meter (m) is a unit of which variable we use to calculate speed?
Distance
300
If you are moving at a constant speed of 10 m/s forward, are you accelerating? Why?
No, because you are neither changing speed nor direction.
400
What is motion?
Changing of a position with regards to the reference point
400
Car travels 250km and stops twice along the way. The entire trip takes 5 hours. What is the average speed of the car?
50km/h
400
What is the velocity between 0 and 5 seconds?
1m/s forward
400
What is the SI unit of acceleration?
m/s2
400
Physics Joke: Speed and Velocity are brothers. Velocity has a family, is rich and teaches classes around the world. Speed dropped out of school and still lives with his parents. They think Speed lacks ___________.
direction
500
Different reference point can make you draw different conclusions about the movement of the object. This is because ...
the motion is relative
500
What is the speed of the object between 4 and 4:30pm in km/h?
v=d/t = 30km/0.5h = 60 km/h
500
What is the total distance traveled?
10m
500
Units for velocity are the same as for speed PLUS ______________ .
direction
500
Heart Joke: When my girlfriend told me she needed time and distance, my heart almost stopped, Fortunately, she was just ________________.
calculating speed