The difference between the above velocities is that they exist in opposite direction of each other. or it can be said that they are negative vectors of each other.
Power = work/time
Work = force * distance
(2000 N * 200 m) / 10 s = 40,000 Joules
Answer: mammals may be relatively better at solving problems than birds.
d=vi*t+(1/2)gt²
d=11 m
g=9.8 m/s²
vi=0 m/s
11 m=0 m/s*t+(1/2)9.8 m/s²t²
11 m=4.9 m/s²t²
t²=11 m / 4.9 m/s²
t=√(11 m / 4.9 m/s²)=1.489... s≈1.5 s
Answer: the time the sone is in flight is 1.5 s
