Answer:
velocity of the girl relative to the lawnmower = 5.75 m/s
Step-by-step explanation:
given data
lawnmower velocity relative ground = +0.75 m/s
bike with a velocity = +6.5 m/s
to find out
velocity of the girl relative to the lawnmower
solution
we get here velocity of the girl relative to the lawnmower that is
velocity of the girl relative to the lawnmower = bike with a velocity - lawnmower velocity relative ground ...................................1
put here value
velocity of the girl relative to the lawnmower = 6.5 m/s - 0.75 m/s
velocity of the girl relative to the lawnmower = 5.75 m/s