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प्रश्न
State its value in C.G.S. as well as in S.I. system.
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उत्तर
In S.I. system, g = 9.8 ms−2; In C.GS. system, g = 980 cms−2
संबंधित प्रश्न
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
A car travels with uniform velocity of 25 m s-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s. Find:
- The distance which the car travels before the brakes are applied,
- Retardation and
- The distance travelled by car after applying the brakes.
When is the acceleration due to gravity positive?
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?
Negative acceleration is called ______.
The slope of a velocity-time graph gives ______.
The acceleration of the body that moves with a uniform velocity will be ______.
An object can be moving with uniform speed but with variable acceleration.
Assertion: When a body is subjected to a uniform acceleration, it is always moving in a straight line.
Reason: Motion may be straight-line motion or circular motion.
