Motion In A Straight Line

Physics
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Unit of acceleration is

A
B
C
D
none of these
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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
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Velocity of a body at rest is always

A
Unity
B
Negative
C
Zero
D
Infinite
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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.
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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 .
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Physical quantity corresponding to the rate of change of displacement is

A
Speed
B
Velocity
C
Acceleration
D
Retardation
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The rate of change of displacement with time is

A
speed
B
acceleration
C
retardation
D
velocity
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Unit for the rate of change of velocity is

A
m / s
B
C
N s
D
N / s
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