  # Motion In A Straight Line

A
B
C
D
none of these
Easy
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## The area under acceleration-time graph gives

A
change in acceleration
B
change in velocity.
C
change in displacement.
D
change in deceleration
Easy
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A
Unity
B
Negative
C
Zero
D
Infinite
Easy
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## The velocity of a body can change

A
if its acceleration is zero.
B
if its acceleration is non-zero.
C
Both A & B
D
None of the above.
Easy
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## Define velocity. State its unit.

A
Velocity is defined as the rate of change of distance of a body with respect to time. Its unit in SI is .
B
Velocity is defined as the rate of change of displacement of a body with respect to time. Its unit in SI is .
C
Velocity is defined as the rate of change of distance of a body with respect to time. Its unit in SI is .
D
Velocity is defined as the rate of change of displacement of a body with respect to time. Its unit in SI is .
Easy
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A
speed
B
acceleration
C
retardation
D
velocity
Easy
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