1. under what conditions is the magnitude of average velocity of an object equal to its average speed?
2. what is the nature of the distance time graph for uniform and non uniform motion?
3. when will you say a body is uniform acceleration?
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Answers
Answer:
1 The magnitude of average velocity of an object is equal to its average speed, only in one condition when an object is moving in a straight line.
2. For uniform motion of an object, its distance-time graph is a straight line with constant slope. (ii) For non-uniform motion of an object, its distance-time graph is a curved line with increasing or decreasing slope.
3.
A body is said to be in uniform acceleration when it is increasing its speed equally in equal intervals of time. A body is said to be in non uniform acceleration when it is increasing unequal amount of speed in equal intervals of time.
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AnsWers:-
AnsWer-1
The magnitude of average velocity is equal to its average speed when the velocity of an object change at uniform rate that is the body is in uniformly accerlated motion.If a body is moving with uniform acceleration.
- Initial velocity = u
- Final velocity = v
Therefore,
Average velocity = u+v/2
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AnsWer-2
The distance time graph for uniform motion is straight line parallel to time axis. The distance time graph for uniform motion is not straight line not parallel to time axis.
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AnsWer-3
A body is in uniform acceleration when equal changes in velocity take place in equal interval of time. However, small these intervals may be.
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