Asked by Bri
I'm desperate
Please help
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?
Please help
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?
Answers
Answered by
Steve
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
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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