Question

A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to the right of point A.

http://edugen.wileyplus.com/edugen/courses/crs3976/art/qb/qu/c06/r3-1.png

What is the speed of the box just before it reaches point A?

Answer 1

Dear visitor,
Unfortunately, the statement of your question is a bit confusing.
Diagram/figure mentioned in the statement is missing. Please, give us the
details so we could help you.