The graph shows how the speed of an object varies with time. velocity/m s¹ 30 C D 20 10- 2 3 4 time/s Which of the following is correct? A The average speed of the object during the first 4 seconds is 20 m s-¹. B The acceleration of the object during the first second is 20 m s². The deceleration of the object is 10 m s-². The object is traveling at a constant speed during the last second.
The graph shows how the speed of an object varies with time. velocity/m s¹ 30 C D 20 10- 2 3 4 time/s Which of the following is correct? A The average speed of the object during the first 4 seconds is 20 m s-¹. B The acceleration of the object during the first second is 20 m s². The deceleration of the object is 10 m s-². The object is traveling at a constant speed during the last second.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
Topic Video
Question
No.35,No.36 and No.37
Transcribed Image Text:31 and 32, refer to the following
ws a ball of plasticine vertically
The ball goes up and eventually
the girl. The starting speed of the ball
the following speed-time graphs best
s the motion of the ball? (Neglect air
-)
g that the acceleration due to gravity g
m s2, when will the ball return to the
Om
1
11
1
ar balls are released from a 40 m
at the same time. One falls from the
the other from half way up as shown
B 2 s
D
31
man
wenden
INDIND
S
INDINE CH
INDIN
INIMA Un
|L FOLD 100
11
11
L
velocity
ase in speed
of travel
D
19
Inn
1000
10 s
40 m
antity is the same for both balls?
eration
(
the following does not illustrate
otion?
rolls along a frictionless surface.
is thrown vertically upwards with a
of 10 m s
C A lift moves vertically upwards past five
floors at zero acceleration.
A boy runs 70 m along a straight track at a
constant speed.
( )
D
35. The graph shows how the speed of an object
varies with time.
velocity/m s¹
B
C
D
30-
Which of the following is correct?
A
20
10-
C
4
The average speed of the object during the
first 4 seconds is 20 m s-¹.
A 0.2 m s-²
C 0.7 m s-2
0
The acceleration of the object during the
first second is 20 m s-².
The deceleration of the object is 10 m s-².
The object is traveling at a constant speed
during the last second.
36. A trolley runs down a slope from rest. In the
first 3 seconds it travels 3.2 m. What is the
constant acceleration?
time/s
S
37. The velocity-time graph of an object is shown in
the diagram below. Which one of the following
is not correct?
velocity
B 0.4 ms-²
D 1.6 ms-2
( )
time
B
A The object is under uniform acceleration.
The gradient of the graph is the acceleration
of the object.
The area S is the total distance travelled in
time t.
D The object starts from rest.
( )
CHAPTER 2: Kinematics 15
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