Consider a rocket in space that ejects burned fuel at a speed of vex= 1.5 km/s with respect to the rocket. The rocket burns 6 % of its mass in 310 s (assume the burn rate is constant).

Question

(a) What is the speed v of the rocket after a burn time of 155.0 s? (suppose that the rocket starts at rest; and enter your answer in m/s)

v=

unanswered
(b) What is the instantaneous acceleration a of the rocket at time 155.0 s after the start of the engines?(in m/s2)

a=