PHY250L (Straighterline Introduction to Physics ) MIDTERM EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE 2026/2027 GRADED A+

PHY250L (Straighterline
Introduction to Physics )
MIDTERM EXAM QUESTIONS
AND CORRECT ANSWERS
LATEST UPDATE 2026/2027
GRADED A+ .

, Started on Tuesday, August 8, 2026, 11:42 AM

State Finished

Completed on Tuesday, August 8, 2026, 12:34 PM

Time taken 52 mins

Grade 130.00 out of 200.00 (65%)


Question 1
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Which of the following physical quantities can be negative?
Select one:
a. kinetic energy
b. potential energy

c. both kinetic and potential energy


The correct answer is: potential energy


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A steel playground slide is 5.25 m long and is raised 2.75 m on one end. A 45.0 kg child slides
down from the top starting at rest. The final speed of the child at the bottom is 6.81 m/s. Find the
average force of friction between the child and the slide.
Select one:
a. 462 N
b. 242 N
c. 60.6 N
d. 31.7 N




The correct answer is: 31.7 N

, Correct
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Which of the following is the general definition of impulse ?
Select one:
a.

b.

c.

d.




The correct answer is:



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Select one:
a. 50.0 N
b. 42.3 N
c. 38.3 N

d. 32.1 N


The correct answer is: 32.1 N


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