S. During launch, the SpaceX rocket engines provide an upward force (thrust) of 7.48 x 106 N. The mass of the rocket at this stage is 5.49 x 105 kg. If the rocket starts from rest, what is the velocity of the rocket at a height of 80 km above the surface of the Earth? Ignore air resistance. (Hint: Find the occeleration. Find v. from the acceleration and distance: v? = v,? + 2ad) VF = 0+ 2 . 13. 6247. 80 * 1000 UF = ) 2. 13, 6267- 80 000 73 a= 13.6247 Fret = ? Up + down 7. Bops+ $383640. 8000 5. 49x105