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प्रश्न
Negative acceleration is called ______.
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उत्तर
Negative acceleration is called retardation (or) deceleration.
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संबंधित प्रश्न
A space craft flying in a straight course with velocity of 75 km s-1 fires its rocket motors for 6.0 s. At the end of this time its speed is 120 km s-1 in the same direction.
Find
(i) The space craft's average acceleration while the motors were firing
(ii) The distance travelled by the space craft in the first 10 s after the rocket motors were started, the motors being in action for only 6 s.
From the diagram given below, calculate deceleration.
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Acceleration is defined as the rate of change of ______.
Assertion: A negative acceleration of a body can be associated with speeding up of the body.
Reason: Increase in the speed of a moving body is independent of its direction of motion.
