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A spaceship with mass of 450 kg, orbits the Earth in 100 minutes in a circular...

A spaceship with mass of 450 kg, orbits the Earth in 100 minutes in a circular orbit. At one point in its orbit it fires an instantaneous burst in the forward direction, reducing its speed by 2.00 %. After this burst, the ship follows an elliptical orbit. What will be its new orbital period?

(the answer is not 102.05 minutes!!)

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