The coordinates of a bird flying in the xy-plane are given by x(t) = at and y(t) = 3.0 m - bt2, where a = 2.4 m/s and b = 1.2 m/s2. (a) Sketch the path of the bird between t = 0 and t = 2.0 s. (b) Calculate the velocity and acceleration vectors of the bird as functions of time. (c) Calculate the magnitude and direction of the bird’s velocity and acceleration at t = 2.0 s. (d) Sketch the velocity and acceleration vectors at t = 2.0 s. At this instant, is the bird’s speed increasing, decreasing, or not changing? Is the bird turning? If so, in what direction?
The coordinates of a bird flying in the xy-plane are given by x(t) = at and y(t) = 3.0 m - bt2, where a = 2.4 m/s and b = 1.2 m/s2. (a) Sketch the path of the bird between t = 0 and t = 2.0 s. (b) Calculate the velocity and acceleration vectors of the bird as functions of time. (c) Calculate the magnitude and direction of the bird’s velocity and acceleration at t = 2.0 s. (d) Sketch the velocity and acceleration vectors at t = 2.0 s. At this instant, is the bird’s speed increasing, decreasing, or not changing? Is the bird turning? If so, in what direction?
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The coordinates of a bird flying in the xy-plane are
given by x(t) = at and y(t) = 3.0 m - bt2, where a = 2.4 m/s
and b = 1.2 m/s2. (a) Sketch the path of the bird between t = 0 and
t = 2.0 s. (b) Calculate the velocity and acceleration vectors of the bird
as functions of time. (c) Calculate the magnitude and direction of the
bird’s velocity and acceleration at t = 2.0 s. (d) Sketch the velocity and
acceleration vectors at t = 2.0 s. At this instant, is the bird’s speed increasing,
decreasing, or not changing? Is the bird turning? If so, in what
direction?
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