Question

A particle moves with a uniform velocity of 50 metre per second for 20 minutes what is the velocity of particle at t is equals to 2 minute? is there any tricks to solve this kind of questions? if it is there plz tell me​

Answer 1

Explanation:

Hey , focus on first line " velocity is uniform". that means there is no rate of change of velocity .

So, velocity at instant of t = 2min is 50m/s.

Answer 2

The keyword in the question is nothing but 'uniform velocity'. Since the body moves with uniform velocity then it has no acceleration as well as the body has a constant velocity throughout the time.

So, even the body started from its initial position, the velocity is 50 m s^(-1). Even after 2 minutes the velocity remains unchanged, i.e., 50 m s^(-1). Even after 20 minutes the velocity is also 50 m s^(-1). This is only because of the uniform velocity or of zero acceleration.

We can notice that the velocity - time graph for such a body will be a straight line parallel to the time axis. Equation for such a graph is nothing but v = a constant. Well, the acceleration - time graph coincides with the time axis and the displacement - time graph is a straight line having positive slope.

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