Asked by Zach
When a 1150 kg space rocket lifts off of ground. How many joules of energy has been provided by its engine during the time in which it achieves a speed of 180 m/s.
Answers
Answered by
bobpursley
I don't see a solution here. Much of the energy of the lift is just providing a force mg which holds the rocket off the ground, not incuding an upward acceleration. So the time to accelerate, or the acceleration itself it critical.
You can ignore this, and compute
final KE: 1/2 mv^2
final PE= mgh=mg (v/2)*time
but you are still left with not knowing the time it took to get to v. Of course, the energy of the rocket provides final PE+final KE.
You can ignore this, and compute
final KE: 1/2 mv^2
final PE= mgh=mg (v/2)*time
but you are still left with not knowing the time it took to get to v. Of course, the energy of the rocket provides final PE+final KE.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.