physics

posted by .

A 200m long train crosses a 400m long bridge with a speed of 36km/hr . Calculate the time taken by train to cross the bridge? plz give me the answer with explaination

  • physics -

    The speed of the train is v = 36 km/h =36000/3600=10 m/s,
    L is the length of the train,
    S is the length of the bridge.
    The time of passing the bridge begins when head end of the train enters the bridge and ends when its rear end leaves the bridge, therefore, the distance is s=L+S=200+400=600 m
    t=s/v =600/10=60s

  • physics -

    speed of the train(v)=36km/h
    =36*5/18
    =10m/s
    let L be the length of the train
    and S be the length of bridge
    Therefore, distance(s)=L+S
    =200+400
    =600m
    time(t)=s/v
    =600/10
    =60s ans.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. SCIENCE(PHYSICS)

    a train is moving on a straight track n travels at a speed of72km/hr and passes a pole in 3 seconds. find the time taken by the train to pass the bridge of length of 540 m?
  2. physics

    A 200m long train crosses a 400m long bridge with a speed of 36km/hr . Calculate the time taken by train to cross the bridge?
  3. Physics

    Train A starts at 4 miles South of a bridge and heads North at a constant speed of 30 miles per hour. Train B starts 6 miles North of the bridge. a. What velocity must Train B have so that the two trains cross the bridge at the same …
  4. Physics

    James Bond is trying to jump from a bridge and land on the first car of a moving train that is going to pass under the bridge. The train moves at 85 km/h and the vertical height between the bridge and the top of the carriage is 15 …
  5. physics

    James Bond is trying to jump from a bridge and land on the first car of a moving train that is going to pass under the bridge. The train moves at 85 km/h and the vertical height between the bridge and the top of the carriage is 15 …
  6. hw

    a train 100m long is to cross a river bridge of length 800m .what time will it take to cross the bridge ?
  7. Physics

    A freight train has a mass of 4.78 * 10^7 kg. the locomotive provides a force of 1.3 * 10^6 N and the brakes provide a force of -3.2 * 10^3 N. 1. How long will it take for the train to accelerate to it's maximum speed of 15 m/s?
  8. physics

    a train 100m long is to cross a river bridge of length 800m. what time it take to cross the bridge ?
  9. Physics

    A tunnel is 800 m long.A 100 m long train crosses the tunnel at a speed of 30m/s.Find the time taken by the train to cross it.
  10. math

    A man standing on a railway bridge which is 180 m long. He find that a train cross the bridge in 20 seconds but cross him in 8 seconds. Find the length of the train and its speed.

More Similar Questions