Q8 of 59 Page 255

For the motion on a straight line path with constant acceleration the ratio of the magnitude of the displacement to the distance covered is:

Now, Distance = Total Path Covered


And Displacement = Shortest distance between initial and final point


So, Clearly Distance Displacement


Or, Displacement Distance


So,


But Distance = Displacement is valid only on a straight line path where direction does not change.


Hence option A is correct.

More from this chapter

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6

A particle accelerates from rest at a constant rate for some time and attains a constant velocity of 8 ms-1. Afterwards it decelerates with a constant rate and comes to rest. If the total time taken is 4 second, the distance travelled is:

 7

A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are:

 9

A body moving with uniform acceleration has velocities 20 ms-1 and 30 ms-1 when passing two points A and B. Then the velocity midway between A and B is:

A. 25 ms-1


B. 24 ms-1


C. 25.5 ms-1


D. 106 ms-1

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A moving body is covering a distance directly proportional to the square of time. The acceleration of the body is: