The appropriate choice is C.
In physics, the law of gravity helps us understand how gravity varies with height. As altitude increases, so too does the experience of gravity. Changes in altitude also result in variations in weight, though these differences are not particularly significant. Consequently, weighing metals at different heights shows negligible variance as the impact of gravity remains constant across them.
The rocket's acceleration is described here as

now recognizing that

we integrate both sides



given that the rocket is accelerating for a duration of t = 10 s
thus, we have


consequently, after t = 10 s, the rocket will achieve a speed of 130 m/s in an upward direction
The question lacks complete details or specifications. Here is the missing information: 1. impossible to establish 2. half of Isaac's 3. identical to Isaac's 4. double Isaac's The angular velocity of Feng will match that of Isaac. Thus, the correct choice is option 3.
T= 24.5 feet per second. That’s the speed it attains just before hitting the ground.