MATHS Fill in the blanks.

To convert a speed of m/sec into km/hr, we multiply it by _______.

In crossing a platform, a train has to cover a distance equal to the ________ of the lengths of the train and the platform.

If a moving body covers equal distances in equal intervals of time, its speed is said to be ________.

Which is greater-a speed of 50 m/sec or 50 km/hr ________.

A speed of 81 km/hr expressed in metres/sec is _________.