If a 1kg english swallow is carrying a 1kg coconut and flies northward from rest to a final velocity of 10m/s in 7.5 seconds, what is its acceleration? a. what force was exerted by the bird during that acceleration? b. how far did the bird travel during that time?

A.

B.

Explanation:

From the exercise we know that the swallow:

To find its acceleration we must calculate:

A. Now, from Newton's second law we know that force is:

B. To find the distance which the bird travels we need to find how long does it take

Solving for t

Now, from the equation of position we know that

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask