Starting from rest, an ice skater (54.0 kg) pushes the boards with a force of 130.0 N [W] and moves 0.704 m. He then moves at a constant velocity for 4.00 s before he digs in his skates and starts to slow down. When he digs in his skates, he causes a net force of 38.0 N [W] to slow him down until he stops.

Determinethe accelerationof the skater

i.Whenheispushingontheboards

ii.Justafterhestops pushingontheboards

iii.When hestartstoslowdown

b.Howfardoeshemove?