Asked by Amy
Hello so my question is an 85kg kangaroo acquires 2.2kJ of energy in jumping straight up and down from rest. How high does the kangaroo jump?
My solution:
When he's at rest Eg=2200J but in air Eg=0
Eg=mhh
2200=85(9.8)h
2.64m=h
Looking at it now it doesn't really make sense that the eg would be 0 in the air. But I'm not really sure how to solve it. Thank you
My solution:
When he's at rest Eg=2200J but in air Eg=0
Eg=mhh
2200=85(9.8)h
2.64m=h
Looking at it now it doesn't really make sense that the eg would be 0 in the air. But I'm not really sure how to solve it. Thank you
Answers
Answered by
Scott
"acquires" is an interesting term
the muscle energy on the ground (like a spring), becomes gravitational potential energy during the jump
it appears you have correctly calculated the height
the muscle energy on the ground (like a spring), becomes gravitational potential energy during the jump
it appears you have correctly calculated the height
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.