Speed, Distance & Time

Speed Distance & Time

Relative speed And Trains

Speed, Distance and Time tricks

Speed, Distance and Time tricks with Example

Time and Distance
The term times and distance area related to the speed of moving objects 
Speed — We define the speed of an object as the distance covered by it in a unit time interval. 
Speed =(Distance travelled)/(time taken)
⇒  Distance travelled = Speed × time 
⇒ Time =  Distance/Speed 


Unit of measurement 
If distance is measured in kilometer, we measure time in hours and speed is written as km/hr. 

If distance is measured in meter, then time is taken in second and speed written as m/s 

Conversion of unit
1 km/hr = (1000 mtr)/(60×60 seconds)=5/18 m/s
1 m/s =18/5 km/hr

Ex. – A train having length 500 m passes a pole in 30 second. Find the speed of a train (in km/hr) 
⇒Speed=Distance/time=500/30 m/s
=500/30×18/5 km/hr 
= 60 km/hr 

Some useful short cut methods