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Class 7
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Physics
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Motion and Time
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Medium Questions
Motion And Time
Physics
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Easy Qs
Med Qs
Hard Qs
>
A dancer demonstrating dance steps along a straight line. The displacement time graph is given.
Find the average speed for the dance step depicted by CD.
A
1
m
s
−
1
B
2
m
s
−
1
C
2
.
7
5
m
s
−
1
D
0
.
8
9
m
s
−
1
Medium
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>
A dancer demonstrating dance steps along a straight line. The position time graph is given.
Find the average velocity for the dance step depicted by AB.
A
1
m
s
−
1
B
1
.
3
3
m
s
−
1
C
2
.
7
5
m
s
−
1
D
0
m
s
−
1
Medium
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>
A person travels a distance of
7
2
k
m
in
4
hours. Calculate speed in
m
/
s
.
Medium
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>
Speed of a body depends on
A
Time
B
Mass of the body
C
Distance travelled by the body
D
Both A and C
Medium
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>
Assertion
100 years make 10 decades.
Reason
Every century is divided into 10 decades.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Assertion is incorrect but Reason is correct
Medium
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>
A body at rest cannot have ______ and ______.
Medium
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>
Name one unit of time bigger than a second.
A
plank time
B
zeptosecond
C
picosecond
D
kilosecond
Medium
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>
Rain is falling vertically with a speed of 1.7 m/s. A girl is walking with speed of 1.0 m/s in the N - E (north-east) direction. To shield herself she holds her umbrella making an approximate angle
θ
with the vertical in a certain direction. Then
A
θ
=
6
0
0
i
n
N
−
E
d
i
r
e
c
t
i
o
n
B
θ
=
3
0
0
i
n
N
−
E
d
i
r
e
c
t
i
o
n
C
θ
=
6
0
0
i
n
S
−
W
d
i
r
e
c
t
i
o
n
D
θ
=
3
0
0
i
n
S
−
W
d
i
r
e
c
t
i
o
n
Medium
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>
What is a leap year ?
A
3
6
6
days
B
3
6
5
days
C
3
6
4
days
D
3
6
3
days
Medium
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>
A dancer demonstrating dance steps along a straight line. The position-time graph is given below.
Find the average velocity of the dancer during the time interval between t
=
4.5 s to t
=
9 s
A
1
m
s
−
1
B
−
1
.
3
3
m
s
−
1
C
2
.
7
5
m
s
−
1
D
−
0
.
8
9
m
s
−
1
Medium
View solution
>