Question

two runners are running along parallel tracks in same direction such as they cover equal distance at equal time are they

(I)at rest with respect to ground?
ii moving with respect to each other?

Answer 1

Both of the given statements are false.

Motion is a relative concept. To say that an object is at rest, or moving, we need to specify a reference point.

Here, when we talk about runners with respect to ground, reference frame is ground. Clearly, the runners are runners are going forward on the ground. So, the runners are Not stationary with respect to ground.


Now, when we say runners with respect to each other, the reference point is one runner.

Here, both runners are at same speed w.r.t ground, as well as w.r.t each other. So the runners are stationary with respect to each other.


Think of it like this:. When you are sitting in a train, which is moving, you feel the train is stationary (ignoring the bumps in rail journeys) . Also, the trees, poles seem to be moving backward.

Overall, you can say that the train is moving on the ground. Equally well you could say that the train was stationary and Earth was moving background. Both arguments are valid.

Answer 2

Answer:

Explanation:

Both of the given statements are false.

Motion is a relative concept. To say that an object is at rest, or moving, we need to specify a reference point.

Here, when we talk about runners with respect to ground, reference frame is ground. Clearly, the runners are runners are going forward on the ground. So, the runners are Not stationary with respect to ground.

Now, when we say runners with respect to each other, the reference point is one runner.

Here, both runners are at same speed w.r.t ground, as well as w.r.t each other. So the runners are stationary with respect to each other.

Think of it like this:. When you are sitting in a train, which is moving, you feel the train is stationary (ignoring the bumps in rail journeys) . Also, the trees, poles seem to be moving backward.

Overall, you can say that the train is moving on the ground. Equally well you could say that the train was stationary and Earth was moving background. Both arguments are valid.