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Old Exam #3 - Foundations of College Physics | PHYS 0000A, Exams of Physics

Material Type: Exam; Class: Foundations of College Physics; Subject: Physics; University: Sierra College; Term: Spring 2000;

Typology: Exams

Pre 2010

Uploaded on 07/30/2009

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Physics A Exam 3 11/29/20
PHYSICS A
EXAM 3
March 27, 2000
Name:___________________SSN:______________
Rules for Exam:
1. Crib sheet will be provided by instructor..
2. Calculators are allowed, but you may not share one.
3. Show your work on numerical problems. Do not expect any credit for a
problem if I cannot logically follow what you have put on your paper.
4. Follow the rules for significant figures. One point will be deducted for each
infraction.
5. Make sure you include units with each answer. One point will be deducted
for each infraction.
6. Points will be deducted for students that refuse to turn in their exams, when
asked to do so (at the end of class).
7. Circle your final answers.
________________________________________________________
Conversion Factors:
1 mile= 5280 feet (exact) 1 day= 24 hours (exact)
1 km =0.6214 miles 1 year=365.25 days
1 mile= 1609.3 m 1 atm=14.7psi=1.013x105 Pa=1.013x105 N/m2
1 m=39.37 inches 1 cm= 10 mm (exact)
1kg=0.001g
Acceleration due to gravity =9.80m/s2 =32.2ft/s2 downward
SCORE
PROBLEM 1 (16 points)
PROBLEM 2 (26 points)
PROBLEM 3 (14 points)
PROBLEM 4 (20 points)
PROBLEM 5 (24 points)
TOTAL (100 max)
Solve the problems you think are easiest first.
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PHYSICS A

EXAM 3

March 27, 2000

Name:___________________SSN:______________

Rules for Exam:

1. Crib sheet will be provided by instructor..

2. Calculators are allowed, but you may not share one.

3. Show your work on numerical problems. Do not expect any credit for a

problem if I cannot logically follow what you have put on your paper.

4. Follow the rules for significant figures. One point will be deducted for each

infraction.

5. Make sure you include units with each answer. One point will be deducted

for each infraction.

6. Points will be deducted for students that refuse to turn in their exams, when

asked to do so (at the end of class).

7. Circle your final answers.

________________________________________________________

Conversion Factors: 1 mile= 5280 feet (exact) 1 day= 24 hours (exact) 1 km =0.6214 miles 1 year=365.25 days 1 mile= 1609.3 m 1 atm=14.7psi=1.013x10^5 Pa=1.013x10^5 N/m^2 1 m=39.37 inches 1 cm= 10 mm (exact) 1kg=0.001g

Acceleration due to gravity =9.80m/s^2 =32.2ft/s^2 downward

SCORE

PROBLEM 1 (16 points) PROBLEM 2 (26 points) PROBLEM 3 (14 points) PROBLEM 4 (20 points) PROBLEM 5 (24 points) TOTAL (100 max)

Solve the problems you think are easiest first.

Name:_____________________________________________

1. A soccer ball is kicked at ground level with a speed of 57.0 ft/s at an angle of 43.0º above the horizontal. A player on the other team catches it just before it hits the ground. Keep 3 significant figures in parts a through d. a. How far does it go before landing (6 points)? Ans 101ft b. What are the initial horizontal (vox) and vertical (voy) components of the football’s velocity? (8 points) Ans 41.7ft/s Ans 38.9ft/s c. Is there another angle in which the ball can be kicked that will yield the same range? If so state the angle? (2 points) Ans 47.0 degrees

  1. A plane is flying 25.0 east of south at 315 km/hr. Suddenly there is a wind from 35.0 west of north at 55 km/hr. What is the plane’s velocity (magnitude and direction) with respect to ground? Sketch (not to scale) a diagram indicating the direction of the plane. (26 points) Ans 369km/h@ 63.5 degrees below horizontal

Name:_____________________________________________

5. A ball is thrown horizontally from the roof of a 56-m tall building at 45m/s. Keep 2 significant figures in parts a through c. a. What is the time of flight of the projectile? (5 points) Ans 3.4s b. How far does it travel in the horizontal direction? (5 points) Ans 1.5x10^2 m c. Calculate the resultant velocity (magnitude and direction) of the projectile when it hits the ground below. Sketch a diagram indicating the x and y-components of the projectile’s velocity, the direction of the resultant vector. (14 points) 56m/s@ 36 degrees below x-axis