A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.3 1013 kg m/s.

Question:

A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.3 × 1013 kg ∙ m/s. The spacecraft moves at such a speed that the pilot measures the proper time interval between two events to be one-half the dilated time interval. Find the relativistic momentum of the spacecraft.