A plane flies with a constant velocity of 222 m/s. The clocks on the plane show that

Question:

A plane flies with a constant velocity of 222 m/s. The clocks on the plane show that it takes exactly 2.00 h to travel a certain distance.
(a) According to ground-based clocks, will the flight take slightly more or slightly less than 2.00 h?
(b) Calculate how much longer or shorter than 2.00 h this flight will last, according to clocks on the ground?