A rocket sled of mass M is to be decelerated by a scoop, as in Fig. P3.108,

Question:

A rocket sled of mass M is to be decelerated by a scoop, as in Fig. P3.108, which has width b into the paper and dips into the water a depth h, creating an upward jet at 60°. The rocket thrust is T to the left. Let the initial velocity be Vo, and neglect air drag and wheel friction. Find an expression for V (t) of the sled for (a) T = 0 and (b) finite T ≠ 0.