Basic Formulas Speed = Distance/Time Time = Distance/speed Distance = speed*time Conversion From km/hr to m/s and m/s to km/hr To convert Kilometers per Hour(km/hr) to Meters per Second(m/s) x km/hr=x×5/18m/s To convert Meters per Second(m/s) to Kilometers per Hour(km/hr) x m/s=x×18/5 km/hr Important Relations: Speed and time are inversely proportional (when distance is constant) ⇒Speed ∝ 1/Time (when distance is constant) If the ratio of the speeds of A and B is a : b, then the ratio of the times taken by them to cover the same distance is 1/a:1/b or b : a suppose a man covers a distance at x kmph and an equal distance at y kmph.then the average speed during the whole journey is (2xy/x+y) kmph Concepts: 1. If two objects are moving in opposite directions towards each other at speeds u and v, then relative speed = Speed of first + Speed of second = u + v . This is also the speed at which they are moving towards each other or the speed at ...
A mile closer to the milestone...