Question

A body moving along a straight line Travels one third of Total distance with a speed of 3 metres per second the remaining distance is covered with a speed of 4 metre per second for half the time and 5 M per second for the other half of the time the average speed during the motion is??

Answer 1

An example is gravitational waves, or ripples in space-time that come from interactions between black holes. This was first predicted by Albert Einstein at the turn of the last century, when he showed that time and space are linked; time speeds up or slows down when space is distorted.

As of mid-2017, the Laser Interferometer Gravitational-Wave Observatory (LIGO) Scientific Collaboration has announced three black-hole interactions and mergers detected through gravitational waves, in just two years.