Motion and Time...

Two trains start their journey at the same time from two stations, which are 200 km apart. If both the trains travel in opposite directions, they cross each other at a distance of 110 km from one of the stations. The ratio of their speeds is

A monkey ascends a 120 m high greased pole, ascending 4 meters in the first minute and slipping down two meters in the next minute, repeating this process till he reaches the top. The time taken by the monkey to reach the top is

A car travels from `A` to `B` at a speed of 40 km/h and returns back to `A` at a speed of 30 km/h. What is the average speed for the whole journey?

The wheel of an engine, having a circumference of 25 decimetres makes 10 revolutions in 4 seconds. The speed of the wheel (in km/hr) is

What does the slope of a distance-time graph represent?

A body is dropped freely into a river from a bridge at a height of 125 m. Find the time taken by the body to touch the water surface.

A body is dropped freely from a building of height 10 m. The velocity with which it strikes the ground is