Unit_6_Test Particle Models in Two­Dimensions Test

Name




Particle Models in Two­Dimensions Test
For all questions on this test assume air resistance and friction to be negligible forces unless
otherwise specified. Put your calculator in degree mode.

You may use g = 10 m/s2 (or 9.8 m/s2) as you wish throughout this test

v = x/t a = v/t v = at + vo x = ½at2 + vot v2 = vo2 + 2ax
sin = opp/hyp cos = adj/hyp tan = opp/adj


Multiple Choice: (2 pts each) For the following, write the letter of the best response in the blank
provided.

_____ 1. If a freely falling object were somehow equipped with an odometer to measure the
distance it travels, then the distance it travels each succeeding second would be
A. the same.
B. less than the previous second.
C. greater than the previous second.
D. The distance cannot be predicted.




_____ 2. If a freely falling object were somehow equipped with a speedometer, then the speed it
gains each succeeding second would be
A. the same.
B. less than the previous second.
C. greater than the previous second.
D. The speed cannot be predicted.




_____ 3. Starting from rest, a freely-falling object will fall, in 10 seconds, a distance of about
A. 10 m.
B. 50 m.
C. 100 m.
D. 500 m.
E. more than 500 m.




_____ 4 When a rock thrown straight upward gets to the exact top of its path, the magnitude of its
A. velocity is zero and its acceleration is zero.
B. velocity is zero and its acceleration is about -10 m/s2.
C. velocity is about 10 m/s and its acceleration is zero.
D. velocity is about 10 m/s and its acceleration is about -10 m/s2.




©Modeling Instruction 2013 1
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:50:38 GMT -06:00
U6 2D Motion - test v3.1


https://www.coursehero.com/file/34539647/Unit-6-Testdoc/

, Questions 5 and 6 refer to the situation and diagram described below.


Two spheres of equal mass, A and B, are projected
off the edge of a 2.0 m high bench. Sphere A
has a horizontal velocity of 5.0 m/s and sphere
B has a horizontal velocity of 2.5 m/s.




_____ 5. Which ball will be in the air for the greater amount of time?
A. Ball A
B. Ball B.
C. They will be in the air for the same amount of time.
D. There is not enough information to decide.

_____ 6. Ball A hits the floor at the spot marked X. Where will ball B hit the floor?
A. at some point between the edge of the table and X.
B. at the same distance from the table as X.
C. at some point past X.
D. There is not enough information to decide.




Questions 7 & 8 refer to the diagram and situation below:



Two spheres A & B are projected off the edge of a
2.0 m high table with the same horizontal
velocity. Sphere A has a mass of 10 g and
sphere B has a mass of 5 g.



_____ 7. Which ball will be in the air for the greater amount of time?
A. Ball A
B. Ball B.
C. They will be in the air for the same amount of time.
D. There is not enough information to decide.

_____ 8. Ball A hits the floor at the spot marked X. Where will ball B hit the floor?
A. at some point between the edge of the table and X.
B. at the same distance from the table as X.
C. at some point past X.
D. There is not enough information to decide.




©Modeling Instruction 2013 2
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:50:38 GMT -06:00
U6 2D Motion - test v3.1


https://www.coursehero.com/file/34539647/Unit-6-Testdoc/