A snowboarder slides down a hill in a
straight line with an acceleration of 2
m/s2. Down the hill, the snowboarder
passes a person who starts their
stopwatch at this moment. At a
displacement of 350 m down the hill, the
snowboarder hits a tree 10 s after the
snowboarder passed the person that was
timing them. Calculate the initial velocity
of the snowboarder, to the nearest 1 m/s,
at the moment they passed the person
with the stopwatch.