First partial Study Guide
Since exam i son Friday, you have the whole week to solve the study guide and mark any doubts or
questions so we can see them and explain them during class. You have no excuse to not: a) do
your homework (plus it will be exam right or one whole point less) and b) ace your test. So lets get
to work….
I.
Vocabulary:
a. Frame of reference:
b. Relative motion:
c. Distance:
d. Vector:
e. Resultant vector:
f.
Speed:
g. Average speed:
h. Velocity:
i.
Instantaneous speed.
II.
Answer the next questions.
a. You are traveling in your car and you stare out the window, and watch the
landscape in a blur. Why? In comparison to you and the landscape, why are you
not moving inside the car?
b. How are distance and displacement similar and different?
c. You know by know that vector has a direction and magnitude, but they are useful
what for?
d. What does velocity describe?
e. What shows the speed on a distance-time graph?
f.
III.
What is the difference between average speed and instantaneous speed?
Conversions
IV.
V.
VI.
VII.
VIII.
IX.
X.
XI.
XII.
The following unit conversions may be helpful:
1 in = 2.54 cm
1 ft = 12 in
1 cm3 = 1 mL
1 in3 = 16.4 cm3
1 ft3 = 28.3 liter
1 gal = 3.79 liter
4 qt = 1 gallon
Which of the above is a unit of length?
Which of the above is a unit of area?
1 m = 3.3 ft
1 yard = 36 inches
1 metric ton = 1000 kg.
2.2 lb. = 1 kg
28.4 g = 1 oz.
16 oz. = 1 pound
1 acre = 43560 ft2
Which of the above is a unit of mass?
Which of the above is a unit of volume?
1. 104 mm into cm
2. 962 cm into km
3. Convert 54 mL to cubic centimeters.
4. Calculate the number of seconds in 3.6 years
5. Measure your height in inches; then convert it to centimeters.
6. 2. 78km - mi
7. 10.088kg – lb
8. 13. 6km/hr - m/s
9. 4.72ft - yd
10. 142 ft – m
11. 5. 678mi/hr - km/hr
12. 15. 54oz – lt
13. Convert 23 miles to feet.
14. Convert 120 lbs to kilograms.
15. Convert 451 mL to ounces.
16. Convert 6 feet to miles.
17. 14 cm - mm
18. 5.2 m - cm
IV.
Distance and displacement. Use the Pythagoras Theorem when it applys. If not solve
the problems by the traditional way. Remember to put both DISTANCE AND
DISPLACEMENT.
a. Taja walks two miles from her door to the park, then returns home to her door.
Express your answer in miles.
b. Jamison turns around (in circles) 5 times. Express your answer in feet.
c.
Jim walks 1 mile then turns 90 degrees and walks 2 miles. Express your answer in
miles.
d. You head 26 m north, then turn left and walk 18m. express your answer in m.
e. In the following picture find out the distance covered by an object when it moves
from ‘C’ to ‘A’, taking each cm. as 1 km.
A
B
C
D
A: 10cm
B: 27 cm
C: 6cm
D: 11 cm
f.
78 miles south, 53 miles north
g. 234 Km west, 789Km south
h. 90cm right, 45 cm down
i.
Your mom drives you to school. From your house you move 5.6 km east, then turn
left and continue to drive 3.3km.
j.
Miguel goes out for a walk. He leaves his house and starts walking north 2.5km,
then remembers he forgot his cell that home so he goes back. He leaves his house
once again and starts walking east 1.3 km, then north 5 km and finally turns right
again and walks 1.2 km. express your answer in km.
V.
Speed, distance and time. With the formula for average speed calculate avergade
speed, distance and time when needed. Remember to do the cleareance of the
formula carefully.
I. Calculate the average speed if you drove.
a) 123 meter in 40 min
b) 7823 km in 2 hrs
c) 896 km in 3 hrs
II. with the average speed formula, calculate the distance in each situation.
a) 3hrs at 45mph
b) 26min at 14 kmph
c) 4hrs at 180 kmph
d) 45 min at 2 mph
3. A car travels 300 miles in 5 hours
e) What is the average speed of the car in miles per hour?
f) What is the average speed of the car in miles per minute?
g) Assuming the speed is constant, how long does it take the car to travel 82 miles?
5. A snail moves 5 meters in 2 hours. If the snail moves at the same speed calculate:
a) The time it takes to move 20 meters
b) The distance it would move in 3 ½ hours
c) The time it takes to move 1 meter.