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Normal Force and Apparent Weight Quiz
Student:
Canakapalli, Nityasiri
Course:
Physics A Honors (FA23) AZ 1 - 2023-2024
Questions
1.
Correct
Weight is the product of mass and the acceleration of gravity.
N
N
N
N
/ 1
1
Points
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2.
Stephen is riding an amusement park ride. His actual weight is N. At one point during the ride,
Stephen is accelerating downward at a rate of m/s
. What is Stephen's apparent weight
during this period of acceleration?
Correct
Gravity acts downward, and the normal force acts upward. Calculate Stephen's mass, then use that value
to find the normal force, which is equal to apparent weight.
N
N
N
N
/ 1
1
Points
3.
Henry throws a -gram stone off of a cliff. What is the apparent weight of the stone while it is in
free fall?
Correct
When an object is in free fall, the only force acting on it is gravity; there is no normal force.
N
N
N
N
/ 1
1
Points
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4.
Caroline is on an airplane. At one point in the flight, she measures that her luggage has an apparent
weight of N. The actual weight of her luggage is N. Which of the following best describes
the vertical motion of the airplane?
Correct
Gravity acts downward, and the normal force acts upward. Calculate the net force, as well as the mass of
the luggage, to find the acceleration.
The airplane is accelerating upwards at m/s
The airplane is accelerating upwards at m/s
The airplane is accelerating downwards at m/s
The airplane is accelerating downwards at m/s
/ 1
1
Points
5.
Which of the following is an example of a normal force?
Correct
The normal force is an upward force, perpendicular to the ground, that counteracts the downward forces,
such as gravity.
the friction between a book and the ground it rests on
the force of gravity that pulls a book downward
the gravitational force that a book exerts on the Earth
the force of the ground pushing upward on a book
/ 1
1
Points
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Chapter 2 Motion
35 / 52
87%
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EXERCISE
A motorboat starting from rest travels in a straight line on a lake.
(ajif the boat achieves a speed of 8.0 m/s in 10s, what is the boat's average
acceleration?
(bIThen, in 5.0 more seconds, the boat's speed is 12 m/s. What
is the boat's average acceleration for the total time?
34
8
ee Ciee le tovlity h
W de e =2
W tee mn t1
35
Acceleration of Free Fall objects
> Objects in motion solely under the influence of gravity
are said to be in free fall.
The acceleration due to gravity at the Earth's surface is
directed downward and is denoted by the letter g. Its
magnitude in SI units is
g- 9.81 m/s?
* Frictional effects (such as air resistance) are negligible.
4
8
12
16
36
t (s)
ruestion: Consider the motion of the object whose…
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(1) .. & YouTube to MP3 Co...
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Item 4
A box weighing 85.0 N rests on a table. A rope tied to the
box runs vertically upward over a pulley and a weight is hung
from the other end. (Figure 1)
Part A
Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 30.0 N.
Figure
1 of 1
Express your answer to three significant figures and include the appropriate units.
Frr =
Value
Units
Submit
Request Answer
Part B
Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 60.0N
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The drawing shows three point charges arranged in three different ways. The charges are +q, -q, and -q; each has the same magnitude,
with one positive and the other two negative. In each of the arrangements the distance d is the same. Rank the arrangements in
descending order (largest first) according to the magnitude of the net electrostatic force that acts on the positive charge.
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Consider the figure below.
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r=2 m
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Indicate over how many squares the sound waves would spread for r = 7 m.
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The sound intensity would decrease to what fraction in value?
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