Download Physic 1st Semester Review

Physic 1st Semester Review
Chapter 2
1.
2.
3.
4.
156 L = ____________________ mL
2.5 x 104 cm = ______________km
2.56 kg = ___________________mg
0.005 km = _________________m
5. The SI unit for mass is the
a. liter
b. milligram
c. gram
d. kilogram
6. The SI unit for length is the
a. kilometer
b. decimeter
c. meter
d. centimeter
7. Convert the following numbers into scientific notation
a. 0.0000569
b. 1,365
c. 2,500,000
d. 0.000000096
8. Convert the following numbers out of scientific notation:
a. 5.56 x 106
b. 3.265 x 100
c. 6.1 x 10-6
d. 3.15 x 101
9. Multiply the following numbers:
(5.2 x 103) (3.3 x 10-2) =
(3.2 x 105) (1.1 x 107) =
10. Divide the following numbers:
(4.2 x 108) / (2.2 x 104) =
(2.5 x 105) / (3 x 107) =
11. Blake is trying to get a rocket to fly 500 feet high. If the rocket reaches a height
of 492ft, 502 ft and 498 ft on three separate occasions, you could describe
Blake’s attempts as
a. accurate and precise
b. accurate and not precise
c. not accurate and not precise
d. not accurate but precise
12. How many significant figures are in the following numbers:
a. 2804
b. 0.005
c. 75.05
d. 1200
13. Add the following numbers and round the answer to the proper number of
significant figures:
6.0345 + 3.25 =
135 + 3.77 =
Chapter 3
14. Which diagram shows an object slowing down?
15. Which is the vector quantity?
a. 30 meters
b. 25 mph to the northeast
c. 3 degrees Celsius
d. 15 kilograms
e.
16. A car travels at a constant speed of 4 m/s for 5 seconds. How far does it travel?
17. A bike accelerates form 0 m/s to 4 m/s in 4 seconds. What is the bikes
acceleration?
Chapter 4 - Vector Addition
18. Find the magnitude of the sum of a 15 km displacement and a 25 km
displacement when the angle between them is 135°.
19. A car is driven 130 km due east and then 75 km due south. What is the
magnitude of the displacement?
20. A hiker walks 5.2 km in one direction and then makes a 45° turn to the right and
walks another 2.5 km. What is the magnitude of the displacement?
21. A car has a velocity of 50 km/hr in a direction 60° north of east. A coordinate
system with the positive x-axis pointing east and a positive y-axis pointing north
is chosen. Which component of the velocity vector is larger, x or y?
22. A descent vehicle landing on Mars has a vertical velocity of 5.5 m/s. At the same
time, it has a horizontal velocity of 3.5 m/s.
a. At what speed does the vehicle move along its descent path?
b.
At what angle with the vertical is this path?
Chapter 5 – Models of Motion
23. See page 109 # 20 and answer a-e.
24. Light from the sun reaches the Earth in 8.3 minutes. The velocity of light is
3.00 x 108 m/s. How far is the Earth from the sun?
25. See page 110 #31 and answer.
26. If you ride your bike for 1.5 hours at an average velocity of 10 km/hr, then for 30
minutes at 15 km/hr. What is your average velocity?
27. A bus is moving at 25m/s when the driver steps on the brakes and brings the bus
to a stop in 3 seconds.
a. What is the average acceleration of the bus while it is braking?
b. If the bus took twice as long to stop, how would the acceleration compare
with what you found in part a?
28. A car traveling at 44 m/s slows at a constant rate to a velocity of 22 m/s over 11
seconds. How far does it travel during this time?
29. A brick is dropped from a high scaffold.
a. What is its velocity after 4 seconds?
b. How far does the brick fall during this time?
30. Determine the displacement of a plane that is uniformly accelerated form 66 m/s
to 88 m/s in 12 seconds.
31. Determine the displacement for Vince Neil as he ran to the sound man to punch
him for not using enough guitar volume. See the diagram below.
a. 3m
b. 6m
c. 60m
d. 4m
32. Using the picture below, determine which statement is true.( clown being shot out
of a cannon)
a. The downward force is greater than the upward force
b. The upward force is greater than the downward force
c. The forward force is greater than the backward force
d. All forces are balanced an equal