Question

Two birds are flying south for the winter. Bird 1 reaches its destination in 6 hours, while bird 2 reaches its destination in 12 hours. If bird 2 covers twice as much distance as bird 1, what is the ratio of their average speeds (bird 1/bird 2)?
1.0
0.8
1.2
0.5

Answer 1

The correct answer is option ( A) the ratio of their average speeds (bird 1/bird 2) is 1.0

velocity = distance / Time

Let us assume distance covered by Bird 1 = d

case 1 (Bird 1) :-

time = 6 hours

velocity(Bird1) = d/6 = 0.167*d

case 2 (Bird 2) :-

time = 12 hours

distance is twice of Bird 1 = 2d

velocity(Bird2) = 2d/12 = 0.167*d

now, velocity of Bird1/Bird2 =  (0.167*d)/(0.167*d) = 1.0

So,velocity of (Bird1/Bird2) is  1.0 .

Average velocity / Average speed = Total displacement / Total distance. Remember that the numerator is less than or equal to the denominator. As a result, the ratio is always equal to or less than one. Distance traveled divided by time taken is the most commonly used formula for calculating average speed. The other formula is to add the initial and final speeds together and divide by two.

Learn more about average speeds  here :-

brainly.com/question/9834403

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