March 1, 2017

Homework Help: physics

Posted by srikar on Saturday, May 19, 2012 at 1:38am.

1.A train passes an electric post in 8sec and a bridge of length 1km in 108sec .Find the speed of the engine .

2.A runner travels at the rate o f25km/hr for 4min ;then at 50km/hr for 8minn and finally at 20km/hr for 2min .Find a) the total distance covered in km and b)average speed in m/sec

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