Motion In A Straight Line

Physics
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The accelerated motion of a body can occur :

A
Due to change in its speed only.
B
Due to change in direction of motion only.
C
Due to change in both speed and direction of motion.
D
Due to constancy of 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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Unit of acceleration is

A
B
C
D
none of these
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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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Which of the following is/are true about acceleration

A
Acceleration is defined as the rate of change of velocity.
B
Its SI unit is .
C
Negative acceleration is called retardation
D
All the above.
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If the velocity of a body does not change, its acceleration is

A
Zero
B
Infinite
C
Unity
D
None of these
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