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
Answer:
C. The data are qualitative because they don't measure or count anything.
Step-by-step explanation:
Quantitative data is about numbers or counts. For example, the number of children of a couple is an example of quantitative data.
Qualitative data is about characteristics, when they don't count or measure anything. For example, if my favorite kind of movie is comedy, for example, it is an example of qualitative data. There are no counts or measurements.
So the correct answer is:
C. The data are qualitative because they don't measure or count anything.
Answer:
5000 + 300 + 9
Step-by-step explanation:
Expanded form adds each individual part to get 5,309 ---
5000 + 300 + 9 = 5,309
1.
20= 2(x-4)
20/2= 2(x-4)/2
10= x-4
+4 . +4
14=x
