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Two trains having lengths 120 m and 100 m running in the opposite directions with velocities 40 km/h and 50 km/h. In what time they will completely cross each other?

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`"Relative velocity of one train w.r.t. second "=40-(-50)=90km//h=25ms^(-1)`
`"Total distance travelled "=120+100=220m`
`"Time"=("Distance")/("Velocity")=(220)/(25)=8.8s`
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AAKASH INSTITUTE ENGLISH-MOTION IN A STRAIGHT LINE-ASSIGNMENT (SECTION - D)
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