need help urgent

Nani and David are each in separate identical rockets with a mass of 1.6lx104 kg. They are approaching Earth from opposite sides at a speed of 0.973c relative to Earth. They each measure theirown rocket to be 142 m long. A. Sketch the situation, labeling velocities. B. How long does Bubbles, who is on Earth, measure the rockets to be? C. What is the rest energy and kinetic energy of each rocke' according to Bubbles? D. What is the relative speed of Nani's rocket to David's rocket? (treat motion as though David's rocket is stationary and Nani's speed accounts for the relative motion) E. How long does David measure Nani's rocket to be? Compare to the Earth frame. F. What does David say the kinetic energy of Nani's rocket is? Compare to the Earth frame