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skatingflower
03.02.2020 •
Physics
Astudent launches a small rocket which starts from rest and from ground level (a height of h = 0). at a height of h = 1.95 km the rocket has reached a velocity of vf = 389 m/s. at that height the rocket runs out of fuel and therefore there is no longer any thrust propelling the rocket. you may assume that the positive direction is upwards in this problem.
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Ответ:
during the upward motion of rocket till its fuel is not over the acceleration is given by
now the time taken by the rocket to reach that point is given as
After fuel is over the maximum height that the rocket will reach is given by
so the total height of rocket from ground is given by
now the time taken by the rocket to reach back on ground is
total time of motion of the rocket will be
T = 10 + 84.11 = 94.11 s
Ответ:
I just want to start a debate.
Should all guns be legalized why or why not?