Arocket is launched from rest and moves in a straight line at 30.0 degrees above the horizontal with an acceleration of 35.0 m/s2. after 25.0 s of powered flight, the engines shut off and the rocket follows a parabolic path back to earth. find the time of flight from launch to impact. hint: simple projectile motion after engines are shut down.
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Ответ:
t = 123.59s
Explanation:
For the launch pad section:
Vf = Vo + a*t where Vo=0.
Vf = 35*25 = 875m/s
The distance traveled during the launch:
Now the projectile motion, we know that its initial speed is the speed calculated previously and the initial height is the y-component of the previously calculated distance.
Solving for t:
t1 = -11.093s t2 = 98.59s
So, the total time of flight will be:
Ответ:
Explanation:
The answer to your question would be number 2 amplitude and frequency are the same so the higher the frequency the higher the amplitude. As you can see in the picture wave E has the highest frequency. which means since A has the lowest frequency and E has the highest frequency answer 2 would be correct the amplitude increases from A to E.