Asked by grey
alculate the final speed of a 1500 kg roller coaster if it has an initial speed of 16 m/s but reduces its elevation by 8.6 m by coasting down a frictionless incline.
Answers
Answered by
bobpursley
final KE=Intial KE+initial PE
1/2 m v^2= 1/2 m 16^2 + mg 8.6
solve for v
1/2 m v^2= 1/2 m 16^2 + mg 8.6
solve for v
Answered by
grey
what mass do i use?
Answered by
bobpursley
doesn matter, it divides out. If you want, use 1500kg
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