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Equations of motion

Problem

A motorbike is traveling to the left with a speed of 27.0ms when the rider slams on the brakes. The bike skids 41.5m with constant acceleration before it comes to a stop.
What was the acceleration of the motorbike as it came to a stop?
Give the correct sign for your answer, using a coordinate system where rightward is positive.
Round the answer to two significant digits. (e.g. 3.141 would round to 3.1)
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
ms2