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प्रश्न
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
विकल्प
True
false
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उत्तर
Acceleration can get negative value also- True
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संबंधित प्रश्न
Distinguish between acceleration and retardation.
What is meant by the term retardation? Name its S.I. unit.
A racing car, initially at rest, picks up a velocity of 180 kmh−1 in 4.5 s. Calculate
- acceleration
- distance covered by the car.
Out of energy and acceleration, which one is a vector?
The distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?
What happens to the stepwise increasing speed-time graph when the size of each step is made very small?
A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The Deceleration.
Correct your friend who says that acceleration gives the idea of how fast the position changes.
What do you mean by constant acceleration?
Assertion: Position-time graph of a stationary object is a straight line parallel to the time axis.
Reason: For a stationary object, the position does not change with time.
