Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
Two trains each of length 100 m moving parallel towards each other at speed 72km/h and 36km/h respectively. In how much time will they cross each other Two trains each of length 100 m moving parallel towards each other at speed 72km/h and 36km/h respectively. In how much time will they cross each other
Hello student,Both the trains are of lenght 100m.Hence, total distance = 100 + 100 = 200 mRelative speeds = 72 + 36 = 108 km/h = 108. 1000/ 3600 m/s = 30 m /sHence, time taken = Distance/ Speed = 200/ 30 = 6.67 sec
since the question states that train are running towards eah other that means their relative speed will be diffrence b/w them.hence, relative speed = 72-36= 36 km/hr = 36 *(5/18) = 10m/secnow time taken= dist/speed200/10=20 secs
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -