Formulas For Speed Time And Distance

December 4, 2020

Formulas of Speed, Time and Distance:-

Speed measures of how quickly an object moves from one place to another. Speed is equal to the distance traveled divided by the time taken.

By using speed, time and distance formulas we can easily find the three values

Distance = Speed x Time

Speed =		Distance
		Time

Time =		Distance
		Speed

Formula for Conversion of Km/hr to m/sec where x is in Km/hr

1 km = 1000m

1 h = 3600 s

So 1km /h = $\frac{1000}{3600} \$

= $\frac{5}{18} \$

Y m/sec =		X x	5		m/sec
			18

Formula for Conversion of m/sec to Km/hr where x is in m/sec

1 m = $\frac{1}{1000} \$ km;

1 sec = $\frac{1}{3600} \$ hr

1m/sec = $\frac{3600}{1000} \$

= $\frac{18}{5} \$

Y km/hr =		X x	18		km/hr
			5

An object covers equal distance at speed S1 and other equal distance at speed S2 then his average speed for the distance is (2S1S2)/(S1 + S2)

When Train Crosses a Stationary Object with no Length(e.g. Pole) in time t

When Train Crosses a Stationary Object with Length LO (e.g. Train Platform) in time t

When Train Crosses a Moving Object with no Length (e.g. Car has negligible length) in time t

When Train Crosses a Moving Object with Length LO (e.g. Another Train treated as an object) in time t

Note – In Case for Train 2 is treated as an object