Train Passes through a Pole

When the train passes through a pole or tower or light-post or tree or a stationary object

If length of train = x meters and speed of the train = y km/hr, then time taken by the train to pass the stationary object = length of the train/speed of the train = x meters/y km/hr.


Note: Change km/hr into m/sec.


Solved examples to calculate when the train passes through a pole or a stationary object.

1. A train 150 m long is running at a uniform speed of 54 km/hr. How much time will it take to cross a pole?

Solution:            

Speed of train = 54 km/hr

                    = 54 × 5/18 m/sec

                    = 15 m/sec

Length of the train = 150 meters

Therefore, time taken by the train to cross a pole = length of train/speed of train

                                                                   = 150/15 sec

                                                                   = 10 sec

Thus, train takes 10 seconds to cross the pole.


2. Find the time taken by a train 300 m long, running at a speed of 54 km/hr in crossing the pole.

Solution:           

Length of the train = 300 m

Speed of the train = 54 km/hr

                         = 54 × 5/18 m/sec

                         = 15 m/sec

Therefore, time taken by the train to cross the pole = 300 m/15 m/sec

      = 20 seconds.


3. A train is running at a speed of 45 km/hr. It crosses a tower in 8 seconds. Find the length of the train.

Solution:            

Speed of train = 45 km/hr

                    = 45 × 5/18 m/sec

                    = 25/2 m/sec

Time takes to cross the tower = 8 seconds

Length of the train = speed × time

                          = 25/2 × 8 m

                          = 100 m


4. A train is running at a speed of 126 km/hr. if it crosses a pole in just 7 second, what is the length of the train?

Solution:           

Speed of the train = 126 km/hr

Speed of the train = 126 × 5/18 m/sec = 35 m/sec

Time taken by the train to cross the pole = 7 seconds

Therefore, length of the train = 35 m/sec × 7 sec = 245 m

Speed of Train

Relationship between Speed, Distance and Time

Conversion of Units of Speed

Problems on Calculating Speed

Problems on Calculating Distance

Problems on Calculating Time

Two Objects Move in Same Direction

Two Objects Move in Opposite Direction

Train Passes a Moving Object in the Same Direction

Train Passes a Moving Object in the Opposite Direction

Train Passes through a Pole

Train Passes through a Bridge

Two Trains Passes in the Same Direction

Two Trains Passes in the Opposite Direction







8th Grade Math Practice


From Train Passes through a Pole to HOME PAGE


New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.



Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



Share this page: What’s this?

Recent Articles

  1. Adding 5-digit Numbers with Regrouping | 5-digit Addition |Addition

    Mar 18, 24 02:31 PM

    Adding 5-digit Numbers with Regrouping
    We will learn adding 5-digit numbers with regrouping. We have learnt the addition of 4-digit numbers with regrouping and now in the same way we will do addition of 5-digit numbers with regrouping. We…

    Read More

  2. Adding 4-digit Numbers with Regrouping | 4-digit Addition |Addition

    Mar 18, 24 12:19 PM

    Adding 4-digit Numbers with Regrouping
    We will learn adding 4-digit numbers with regrouping. Addition of 4-digit numbers can be done in the same way as we do addition of smaller numbers. We first arrange the numbers one below the other in…

    Read More

  3. Worksheet on Adding 4-digit Numbers without Regrouping | Answers |Math

    Mar 16, 24 05:02 PM

    Missing Digits in Addition
    In worksheet on adding 4-digit numbers without regrouping we will solve the addition of 4-digit numbers without regrouping or without carrying, 4-digit vertical addition, arrange in columns and add an…

    Read More

  4. Adding 4-digit Numbers without Regrouping | 4-digit Addition |Addition

    Mar 15, 24 04:52 PM

    Adding 4-digit Numbers without Regrouping
    We will learn adding 4-digit numbers without regrouping. We first arrange the numbers one below the other in place value columns and then add the digits under each column as shown in the following exa…

    Read More

  5. Addition of Three 3-Digit Numbers | With and With out Regrouping |Math

    Mar 15, 24 04:33 PM

    Addition of Three 3-Digit Numbers Without Regrouping
    Without regrouping: Adding three 3-digit numbers is same as adding two 3-digit numbers.

    Read More

Worksheet on Conversion of Units of Speed

Worksheet on Calculating Time

Worksheet on Calculating Speed

Worksheet on Calculating Distance

Worksheet on Train Passes through a Pole

Worksheet on Train Passes through a Bridge 

Worksheet on Relative Speed

Worksheet on Decimal into Percentage