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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No.35,No.36 and No.37
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
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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