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Question-1
Unit of retardation is
(A)
ms
2
(B)
ms
-1
(C)
ms
-2
(D)
ms
Question-2
Select a periodic motion from the following list.
(A)
Motion of Ball
(B)
Movement of vehicles
(C)
Grazing of cow
(D)
Rotation of earth
Question-3
With increase in mass weight of body____ .
(A)
increase
(B)
decrease
(C)
remains same
(D)
none of these
Question-4
Distance travelled by a body in unit time is called
(A)
Velocity
(B)
Speed
(C)
Disoplacement
(D)
Acceleration
Question-5
A body travels with a velocity 2m/s eastwards for 3 s and then with a velocity 4m/s northwards for 2s.What is the final displacement of the body
(A)
6m
(B)
8m
(C)
12m
(D)
10m
Question-6
When a body falls freely from a height b,above the surface of earth,its velocity will be maximum.
(A)
At the starting position
(B)
When it touches the surface of earth
(C)
At an intermediate position
(D)
Cannot be predicted.
Question-7
If an object with velocity 30m/s is accelerated at 8m/s
2
what will be its velocity after 5 seconds?.
(A)
70m/s
(B)
150m/s
(C)
40m/s
(D)
90m/s
Question-8
Mass of a body
(A)
increases with altitude
(B)
decrease with altitude
(C)
remains constant
(D)
increases with depth from the surface of earth.
Question-9
Rate of change of velocity of a body with time is called
(A)
velocity
(B)
displacement
(C)
speed
(D)
acceleration
Question-10
A body in uniform motion has
(A)
constant speed
(B)
constant velocity
(C)
constant acceleration
(D)
changing speed
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Std 7
Kerala (English Medium)
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