Answer:
4 m/s
Step-by-step explanation:
A bird is flying to the right when a gust of wind causes the bird to accelerate leftward at 0.5 m/s^2 for 3 s. After the wind stops, the bird is flying to the right with a velocity of 2.5 m/s.
Assuming the acceleration from the wind is constant, what was the initial velocity of the bird before the gust of wind?
Let say Initial Velocity of Bird = U m/s
Final Velocity of Bird V = 2.5 m/s
acceleration a = -0.5 m/s² ( as opposite to the fly direction)
Time T= 3 sec
Applying formula
V = U + aT
=> 2.5 = U + (-0.5)3
=> 2.5 = U -1.5
=> U = 4 m/s
the initial velocity of the bird before the gust of wind = 4 m/s
