Calculations based on Problems on trains - Two trains/objects travelling in opposite direction

Problems on trains - Two trains/objects traveling in opposite direction

When two trains or objects travels in opposite direction, their speed adds up hence we consider relative speed as sum of  their speeds.

Suppose two trains or two bodies are moving in the opposite direction at u m/s and v m/s ,  then relative speed = (u+v) m/s 

Formulae Used 

Time taken = length of train /relative speed

Calculating time taken by the train/ object to completely cross each other

Formula : Time = train length / relative speed

Input

Reset




Check your output in all other similar units

Time(sec) {{tsvalue}}
Time(hr) {{thvalue}}

Calculating speed of the train

Formula : Speed = (train length / time) - speed of object

Input

Reset




Check your output in all other similar units

Speed of train(m/sec) {{ssvalue}}
Speed of train(km/hr) {{shvalue}}

Calculating length of train crossing a object

Formula : Length = time ⨯ relative speed

Input

Reset




Check your output in all other similar units

Length(m) {{lmvalue}}
Length(hr) {{lkmvalue}}

Calculating speed of the object

Formula : Speed = (train length / time) - speed of train

Input

Reset




Check your output in all other similar units

Speed of object(m/sec) {{ssvalue}}
Speed of object(km/hr) {{shvalue}}
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