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how to calculate relative speed in maths. Kilometers per hour kmh or km h -1 A km is 1000 m and there are 3600 seconds in an hour so we can convert like this see Unit Conversion Method to learn more. The will become the denominator in the fraction that you use for calculating.
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For example a drivers speedometer says his car is going 60 miles per hour mph when its actually going 62 mph. If youre multiplying or dividing you add the relative uncertainties. For the second case the time taken by the trains in passing each other.
Speed distance time displaystyle text speed frac text distance text time.
For the first case the time taken by the trains in passing each other hours where L₁ and L₂ are length of trains. So their relative speed is x y kmhr x y Then The time after which both the bodies meet distance travelled relative speed d km x y kmhr. Meters per second ms or m s -1 or. Calculating percentages can be an easy task.
