PCS110: Mid-term Examination
Prof. Carl Kumaradas
2017-10-30
Name: Student #:
INSTRUCTIONS:
• You have 90 minutes to complete this exam.
• This is a closed book exam. The only items allowed on your desk are pens, pencils, a pencil sharpener,
erasers, a non-programmable calculator, a clear water bottle without a label, tissues, any medically
necessary food (you must inform your invigilator), and your Ryerson student ID (which must be
on your desk at all times).
• Everything else must be at the front of the room, including cell phones (turned off!), laptops and
other electronic devices, notes and books, coats, hats, purses, and pencil cases.
• You may not leave an exam in the first 30 minutes or last 15 minutes.
• All questions will be marked and carry equal weight.
• For each question show your work (where applicable) in the space below the question, circle your
choice on this test and fill in the appropriate bubble on the Scantron sheet. The bubbles must be
filled using a pencil.
• The Student Code of Academic Conduct is really important! www.ryerson.ca/academicintegrity
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:48:22 GMT -06:00
https://www.coursehero.com/file/26376489/PCS110-mid-term-exam-solutionspdf/ 1
, A ball kicked into the air moves along the path shown below; it is at point A and then later at point B.
1. Which arrow best indicates the direction of the ball’s instantaneous velocity at point B?
A. B. C. D. E.
2. Which arrow best indicates the direction of the ball’s average velocity from point A to point B?
A. B. C. D. E.
3. Which arrow best indicates the direction of the change in the ball’s momentum from point A to point
B?
A. B. C. D. E.
4. A bird has an average velocity of h12,−5,0i m/s for a time of 3.0 seconds. The bird’s initial position
is h−75,300,0i m. What is the bird’s final position after 3.0 seconds?
A. h−63,295,0i m B. h−39,315,0i m C. h−111,315,0i m
D. h−39,285,0i m E. h−111,285,0i m
5. A proton (mass 1.7 × 10−27 kg) is moving at a speed of 2.8 × 108 m/s. What is the magnitude of the
proton’s momentum?
A. 1.3 × 10−18 kg m/s B. 4.8 × 10−19 kg m/s C. 4.7 × 10−27 kg m/s
D. 7.8 × 108 kg m/s E. 5.1 × 10−19 kg m/s
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:48:22 GMT -06:00
https://www.coursehero.com/file/26376489/PCS110-mid-term-exam-solutionspdf/ 2
Prof. Carl Kumaradas
2017-10-30
Name: Student #:
INSTRUCTIONS:
• You have 90 minutes to complete this exam.
• This is a closed book exam. The only items allowed on your desk are pens, pencils, a pencil sharpener,
erasers, a non-programmable calculator, a clear water bottle without a label, tissues, any medically
necessary food (you must inform your invigilator), and your Ryerson student ID (which must be
on your desk at all times).
• Everything else must be at the front of the room, including cell phones (turned off!), laptops and
other electronic devices, notes and books, coats, hats, purses, and pencil cases.
• You may not leave an exam in the first 30 minutes or last 15 minutes.
• All questions will be marked and carry equal weight.
• For each question show your work (where applicable) in the space below the question, circle your
choice on this test and fill in the appropriate bubble on the Scantron sheet. The bubbles must be
filled using a pencil.
• The Student Code of Academic Conduct is really important! www.ryerson.ca/academicintegrity
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:48:22 GMT -06:00
https://www.coursehero.com/file/26376489/PCS110-mid-term-exam-solutionspdf/ 1
, A ball kicked into the air moves along the path shown below; it is at point A and then later at point B.
1. Which arrow best indicates the direction of the ball’s instantaneous velocity at point B?
A. B. C. D. E.
2. Which arrow best indicates the direction of the ball’s average velocity from point A to point B?
A. B. C. D. E.
3. Which arrow best indicates the direction of the change in the ball’s momentum from point A to point
B?
A. B. C. D. E.
4. A bird has an average velocity of h12,−5,0i m/s for a time of 3.0 seconds. The bird’s initial position
is h−75,300,0i m. What is the bird’s final position after 3.0 seconds?
A. h−63,295,0i m B. h−39,315,0i m C. h−111,315,0i m
D. h−39,285,0i m E. h−111,285,0i m
5. A proton (mass 1.7 × 10−27 kg) is moving at a speed of 2.8 × 108 m/s. What is the magnitude of the
proton’s momentum?
A. 1.3 × 10−18 kg m/s B. 4.8 × 10−19 kg m/s C. 4.7 × 10−27 kg m/s
D. 7.8 × 108 kg m/s E. 5.1 × 10−19 kg m/s
This study source was downloaded by 100000899606070 from CourseHero.com on 02-22-2026 23:48:22 GMT -06:00
https://www.coursehero.com/file/26376489/PCS110-mid-term-exam-solutionspdf/ 2
