Physics
_________________________________
Unit Review – Metric, Speed, Velocity, Graphing
I.
1.
Using Vocabulary
The interval between two events is ________________.
2. The basic unit of length in SI is ____________________.
3. In SI time is measured in _______________________.
4. SI is the system of _______________________ used worldwide.
5. A fundamental unit can be ___________________ directly.
6. In order to calculate speed, one must know the ____________ and ________ .
7. _________________ (distance or displacement) is always a positive number.
8. _________________(distance or displacement) can be a positive or negative number.
9. A straight line on a graph is indicative of __________________ speed.
10. Speed is measured in ________________________________________________.
11. Velocity is the speed of an object plus the ________________________ it is traveling in.
12. The metric system is based on units of ________________.
13. There are _______________ meters in one kilometer.
14. Density, speed and velocity are ____________ units.
15. Metric conversions can be made using ______________________________________ or
_____________________________________________________________.
16. The symbol for distance is _________ .
17. _________________ is a vector quality.
18. A change in position is known as _________________________.
19. A ________________________ quantity has a magnitude or number value.
20. A ________________________quantity has both a magnitude and a direction.
21. How far your ending point is from your starting point is the definition of
____________________________________________.
22. The distance between dots on a dot diagram indicate
___________________________________________________________________________
23. _________________________________________ is the speed of an object at any given point in
time.
24. The formula for speed is:
25. The formula for velocity is :
II.
Problem Solving
1.
(Show all 5 steps of your work.)
What is the speed of a bicyclist who has traveled 840 m in 6.2 seconds?
2.
A baseball is thrown with a speed of 38.0 m/s. How long does it take for the ball
to travel 15.4 m?
3.
If a seal swims with an average speed of 2.6 m/s, how far will it have traveled in
59 seconds?
4. If a cheetah runs 250 m in 7.6 seconds, what was the cheetah’s speed?
5.
If a speed skater with an average speed of 12.5 m/s skates for 43 seconds,
how far did he skate?
6. How long does it take a runner to cover 800 meters if he is running at a top
speed of 1.3 m/s?
7. A bird flies 28m toward the east in 7 seconds and then turn around and flies 6
meters to the west in 2 seconds.
a) What was the distance traveled to the East? _________________
b) What was the distance traveled to the West? _________________
c) What was the total distance traved?________________________
d) What was the speed of the bird in the first 7 seconds? (Show all work)
e)
f)
g)
h)
What was the displacement during the first 7 seconds? _________
What was the displacement during the next 2 seconds? _________
What was the bird’s total displacement? ______________
What was the bird’s average velocity for the entire trip?
Conversions: Using King Henry
150mm = _________km
45mL = ______hL
34.77cm=_______dkm
23.66g = _______mg
322.77dm = ______m
88.9909km = ________m
554.889L = _______mL
321.88 g = _______kg
43.888mL = _________L
54.889s = ____________ks
23.889mL = ______L
43.765 g = _________kg
Conversions: Using Dimensional Analysis
Convert 338 inches into meters
Convert 6 gallons into liters
Convert 15 inches centimeters
Graphing
Create a dot diagram for a car traveling at the constant speed of 50 mph and a car traveling at 20mph:
Create a graph that show a runner with a constant speed of 3m/s
Use the graph above to answer questions 1-3
1.
Which of the following is true?
A. The object increases its velocity
B. The object decreases its velocity
C. The object’s velocity stays unchanged
D. The object stays at rest
2.
What is the velocity of the object?
A. 4 m/s
B. 20 m/s C. 8 m/s D. 4m/s
3.
What is the instantaneous velocity of the object at 4s?
A. 4 m/s
B. 20 m/s C. 8 m/s D. 4 m/s
The following graph represents the position as a function of time for a moving object. Use this graph to
answer questions 1 -3.
1. Which of the following is true?
A. The object increases its velocity
B. The object decreases its velocity
C. The object’s velocity stays unchanged
D. The object stays at rest
2. What is the velocity of the object?
A. 4 m/s
B. 20 m/s C. 8 m/s D. 40 m/s
E. 5 m/s
3. What is the instantaneous velocity of the object at 4s?
A. 4 m/s
B. 20 m/s C. 8 m/s D. 40 m/s
E. 5 m/s
The diagram above illustrates a car that, starting from the origin, travels 4 km east and then 7 km west.
Use it to answer questions 5-6.
5.
What is the net displacement of the car from the initial point?
A. 3 km, west
B. 3 km, east
C. 4 km, east
D. 7 km, west
E. 7 km east
6.
Starting from the origin, a car travels 4 km east and then 7 km west. What is the traveled
distance of the car from the initial point?
A. 3 km
B. 3 km
C. 4 km
D. 7 km
E. 11 km