
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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please help with question number 68

Transcribed Image Text:67. Which graph best represents the motion or
64 Two horizontal forces are applied to a
2.0-kilogram block on a frictionless, horizontal
surface, as shown in the following diagram.
on it?
F2 = 8.0 N
F = 2.0 N
2.0 kg
Time
Time
(3)
(1)
Frictionless horizontal surface
The acceleration of the block is
(1) 5.0 m/s? to the right
(2) 5.0 m/s? to the left
(3) 3.0 m/s? to the right
(4) 3.0 m/s? to the left
Time
Time
(4)
(2)
65. Which graph best represents the motion of an
object on which the net force is zero?
68. Four forces act on an object, as shown in the
following diagram.
30. N
40. N+
Time
Time
Time
Time
(1)
(2)
(3)
(4)
30. N
66. The vector diagram below represents force F
acting on point P.
If the object is moving with a constant velocity.
what is the magnitude of force F?
69. A 1.0-kilogram book rests on a horizontal
tabletop. The magnitude of the force of the
tabletop on the book is
(1) 1.0 kg (2) 9.8 kg (3) 1.0N
Force
Which vector diagram represents the pair
of concurrent forces that would produce
equilibrium when added to force F?
(4) 9.8 N
PL,
70. In the following diagram, an inflated balloon
- released from rest moves horizontally with
velocity v.
(1)
(2)
(3)
(4)
Air
Balloon
What is the most likely cause of this velocity?
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