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March 29, 2017

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2. A bird, starting from rest, accelerates at 3 m/s2 north for 5 seconds. It then sees the rest of its flock and turns due east accelerating from its previous speed to 20 m/s in 2 seconds.

A. What is the velocity of the bird after the initial leg (due north)?

B. How far does it fly during this first leg?

  • Physics, science, - ,

    surely you know your basic formulas:

    s = 1/2 at^2
    v = at

    2A.
    v = 3*5 = 15m/s

    2B.
    s = 1/2 * 3 * 25 = 37.5m

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