Crossing the Bridge

Classical Mechanics Level 2

A train $200\text{ m}$ long crosses a bridge which is $300\text{ m}$ long. It enters the bridge with a speed of $30\text{ m/s}$ and leaves it with a speed of $50\text{ m/s}.$

What is the time taken by the train to cross the bridge?

Assume that the train travels with constant acceleration.

Try my World of Physics to solve many problems like this one.