California State University, San Marcos
PHYS 357 Physic Final Semester 1
Final Exam: Semester 1 Test
Physics Prescriptive Sem 1
Points Possible:100
Name: Amadeus martinez
Date: 02-1-2022
In this test, you will apply what you have learned in the semester. Answer the questions
below. Submit this to your teacher when you are done and show all your work on the
test.
Qu
...[Show More]
Final Exam: Semester 1 Test
Physics Prescriptive Sem 1
Points Possible:100
Name: Amadeus martinez
Date: 02-1-2022
In this test, you will apply what you have learned in the semester. Answer the questions
below. Submit this to your teacher when you are done and show all your work on the
test.
Question 1 (10 points)
Perform the following unit conversions. (2 points each)
British to SI Conversion Table
| 1 mile = 5280 feet |
1 yard = 3 feet |
| 1 centimeter = 10 millimeters |
1 kilogram = 1000 grams |
| 1 kilometer = 1000 meters |
1 liter = 1000 milliliters |
| 1 meter = 100 centimeters |
1 pound = 0.454 kilograms |
| 1 foot = 0.305 meters |
1 gallon = 3.79 liters |
| 1 inch = 2.54 centimeters |
1 mile = 1.61 kilometers |
| 1 ounce = 28.35 grams |
1 quart = 0.946 liters |
a. Convert 55 inches to centimeters.
139.7 centimeters
b. Convert 5000 pounds to kilograms.
2,270 kilograms
c. Convert 100 miles to kilometers.
160.934 kilometers
d. Convert 75 liters to quarts.
79.273 quarts
e. Convert 800 cm to meters.
8 meters
Question 2 (13 points)
A diver of mass 75 kg jumps upward off a diving board and into the water. The diving board
is 2 m above the water.
a. When the diver jumps, she has a speed of 2.5 m/s. How much kinetic energy does she
have? (4 points)
m = 101 kg
v = 1.2 m/s
b. How much gravitational potential energy will she have gained at her highest point?
Explain how you found the answer. (3 points)
c. Based on the diver's speed from part (a), how high above the board will she rise? (4
points)
maximum height
U=mgh
so she will be 7.35 cm above the initial height
d. How fast will the diver be moving when she hits the water? (2 points)
Question 3 (12 points)
At the beginning of a bobsled race, teammates push their bobsled along the track before
jumping into it.
a. Before the teammates jump in, they push the bobsled (m = 100 kg) from rest to a speed
of 6 m/s. How much kinetic energy does the bobsled gain? (3 points)
b. How much work did the bobsled team do? Explain how you found the answer. (3 points)
c. If the teammates pushed the bobsled a distance of 8 m, how much force did they apply?
(3 points)
d. Later, the bobsled is racing down the track at a speed of 20 m/s. With the team in it, the
bobsled has a total mass of 325 kg. How much work must be done by friction to slow down
the bobsled to 17 m/s? (3 points)
Question 4 (10 points)
The coordinate plane below shows the path of a bicyclist. Each square represents 10
meters.
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