A speed skater moving across frictionless ice at 8.0 m/s hits a 5.0-m-wide patch of rough ice. She slows steadily, then continues on at 6.0 m/s. What is her acceleration on the rough ice?
Acceleration on rough ice,
We need to consider the time, distance and speed when she hit the rough patch of ice and when she left that rough patch.
Speed when she hits the patch of ice, initial speed
Speed when she left the patch of ice final speed
Width of patch of ice