A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south. What is the magnitude and direction of the car's resultant displacement?
40 metres, South
50 metres, South
50 metres, North
40 metres, North
2. Multiple Choice
20 seconds
1 pt
Is this a scalar quantity or a vector quantity? Wind blowing at 20 knots
Scalar
Vector
3. Multiple Choice
20 seconds
1 pt
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
20m
40m
0m
-20m
4. Multiple Choice
1 minute
1 pt
A car moved 60 km East and 90 km West. What is the distance it traveled?
30 km, West
60 km. East
90 km
150 km
5. Multiple Choice
30 seconds
1 pt
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
12 km
19 km, East
31 km
43 km, East
6. Multiple Choice
30 seconds
1 pt
An airplane traveling north at 220 meters per second encounters a 50.0-meters-per-second crosswind from west to east.
170 m/s
214 m/s
226 m/s
270 m/s
7. Multiple Choice
30 seconds
1 pt
Which statement describes a vector?
It has magnitude but no direction
It has direction but no magnitude
It has both direction and magnitude
It has constant magnitude but no direction
8. Multiple Choice
30 seconds
1 pt
What is the unit for acceleration?
m/s
ms
m/s/s
mss
9. Multiple Choice
30 seconds
1 pt
Which of the following quantities are vectors?
speed, velocity, acceleration
velocity, acceleration, force
force, acceleration, mass
length, mass, time
10. Multiple Choice
30 seconds
1 pt
The speedometer on your car tells you
average velocity
instantaneous velocity
average speed
instantaneous speed
11. Multiple Choice
30 seconds
1 pt
What two measurements are necessary for calculating speed?
Mass and time
Temperature and mass
Mass and distance
Distance and time
12. Multiple Choice
30 seconds
1 pt
What is the speed of an object that travels 60 meters in 4 seconds?
240 m/s
15 m/s
0.067 m/s
15 mph
13. Multiple Choice
1 minute
1 pt
A measurement of how fast an object is moving
Velocity
Speed
Vector
Acceleration
14. Multiple Choice
1 minute
1 pt
A description of the speed and direction of an object's motion
Velocity
Speed
Acceleration
Vector
15. Multiple Choice
30 seconds
1 pt
The unit we use to measure acceleration is ___.
meters / second
meters
seconds
meters / second / second
16. Multiple Choice
30 seconds
1 pt
Acceleration is a change in ________.
direction
speed
velocity
distance
17. Multiple Choice
1 minute
1 pt
You are walking in a straight line at a consistent speed. Do you have acceleration?
no
yes
18. Multiple Choice
30 seconds
1 pt
As you walk you make a right turn. Do you have acceleration?
yes
no
19. Multiple Choice
1 minute
1 pt
A negative acceleration means that your object is _____.