1) The distance travelled by the rocket can be found by using the basic relationship between speed (v), time (t) and distance (S):
[tex] v=\frac{S}{t} [/tex]
Rearranging the equation, we can write
[tex] S=vt [/tex]
In this problem, v=14000 m/s and t=150 s, so the distance travelled by the rocket is
[tex] S=vt=(14000 m/s)(150 s)=2.1 \cdot 10^6 m [/tex]
2) We can solve the second part of the problem by using the same formula we used previously. This time, t=300 s, so we have:
[tex] S=vt=(14000 m/s)(300 s)=4.2 \cdot 10^6 m/s [/tex]