Physics
posted by kate .
part 1 of 3: A hawk flies in a horizontal arc of radius 9.9 m at a constant speed of 4.8 m/s. Find its centripetal acceleration. Answer in units of m/s^2.
part 2 of 3: It continues to fly along the same horizontal arc but increases its speed at the rate of 1 m/s^2. Find the magnitude of acceleration under these new conditions. Answer in units of m/s^2.
Part 3 of 3: Find the direction of acceleration relative to the direction of motion under these conditions. Answer between 180 degrees and 180 degrees. Answer in unit of degrees.

(a) Centripetal (or normal)
acceleration is
a(c)= m•v²/R=…
(b) Tangential acceleration
a(τ)= 1 m/s²
a=sqrt{a(c)² +a(τ)²}=...
(c)tanα= a(c)/a(τ)= ..
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