Bob M.

asked • 12/08/19

Physics, Energy Problems (confused!)

1) a 2000 kg rollercoaster starts from a height of 55 m and an initrial velocity of 8 m/s. When it reaches the bottom of the hill (height of zero), what is its velocity?

2) For the rollercoaster problem above (m=2000kg), if the final velocity at the bottom of the hill was only 27 m/s instead of 34 m/s, how much energy would have been "lost"? (Lost mechanical energy is the Eother)

I got 427,000J for the 2nd probem, but according to my teacher it's 435,000J. Was that simply a mistake?

1 Expert Answer


Arturo O. answered • 12/08/19

Experienced Physics Teacher for Physics Tutoring

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