A+ Graded Paper
PHY 265 Exam 1 | Verified Questions & A+
Answers – Introductory Physics
Questions and Mark scheme
Version: Final 1.1
, When the strong man shown (Figure 1) exerts a downward force of 890 NN on the rope, how much upward force is
exerted on the block? - ✔✔890 N
The equilibrium rule F = 0 applies to
a. objects or systems at rest.
b. objects or systems in uniform motion in a straight line.
c. both
d. neither - ✔✔c. both
The support force on a 10-N book that rests on a horizontal surface is
a. less than 10 N.
b. greater than 10 N.
c. 10 N.
d. dependent on whether the book lies flat or stands upright. - ✔✔c. 10 N
Lucy Lightfoot stands with one foot on one bathroom scale and her other foot on a second bathroom scale. Each scale
reads 400 NN .
What is Lucy's weight? - ✔✔W = 800 N
In general, the friction forces between one object and another act
a. in opposite directions.
b. in the same direction.
c. at right angles to each other.
d. none of the above - ✔✔a. in opposite directions.
Why do we say that velocity is a vector and speed is not?
a. Velocity happens in three dimensions, and speed happens in two dimensions.
b. Velocity has a vertical component, and speed does not.
c. Speed is never zero, and velocity can be zero.
d. Velocity includes a direction, and speed does not. - ✔✔d. Velocity includes a direction, and speed does not.
PHY 265 Exam 1 | Verified Questions & A+
Answers – Introductory Physics
Questions and Mark scheme
Version: Final 1.1
, When the strong man shown (Figure 1) exerts a downward force of 890 NN on the rope, how much upward force is
exerted on the block? - ✔✔890 N
The equilibrium rule F = 0 applies to
a. objects or systems at rest.
b. objects or systems in uniform motion in a straight line.
c. both
d. neither - ✔✔c. both
The support force on a 10-N book that rests on a horizontal surface is
a. less than 10 N.
b. greater than 10 N.
c. 10 N.
d. dependent on whether the book lies flat or stands upright. - ✔✔c. 10 N
Lucy Lightfoot stands with one foot on one bathroom scale and her other foot on a second bathroom scale. Each scale
reads 400 NN .
What is Lucy's weight? - ✔✔W = 800 N
In general, the friction forces between one object and another act
a. in opposite directions.
b. in the same direction.
c. at right angles to each other.
d. none of the above - ✔✔a. in opposite directions.
Why do we say that velocity is a vector and speed is not?
a. Velocity happens in three dimensions, and speed happens in two dimensions.
b. Velocity has a vertical component, and speed does not.
c. Speed is never zero, and velocity can be zero.
d. Velocity includes a direction, and speed does not. - ✔✔d. Velocity includes a direction, and speed does not.
