A rocket that weighs 7840 N on earth is fired. The force of propulsion is + 10 440N. Determine a) the mass of the rocket, b) the acceleration of the rocket, c) the velocity of the rocket at the end of 8.0 s.

Answer 1

m = 7840/9.81

10440 - 7840 = m a

v = a t = 8 a

Answer 2

a. 800