9. The rocket engine of a 10 tonne missile produces a thrust of 400 kN. The missile is launched in a vertical direction. The air resistance is 0.75v2 N where v is the speed of the missile.

Question

9.  The rocket engine of a 10 tonne missile produces a thrust of 400 kN. The missile is launched in a vertical direction. The air resistance is 0.75v2 N where v is the speed of the missile.
(i)	Find the speed of the missile after one minute.		
(ii)	Find the distance travelled by the missile after one minute.

oobleck · Answer

F = ma (i) v = at (ii) s = 1/2 at^2