Unformatted text preview: The initial position of the Frisbee is given by r r i = (15.0 m ) ˆ i + (1.10 m ) ˆ j . You catch the Frisbee 30.0cm above your feet 2.50s after it is released. Find (a)the final position vector and (b)the average velocity vector for the Frisbee. 4. Using a coordinate system where x points eastward and y points northward, the position of a boat on a lake is given by r r ( t ) = ( t 3 + 5 t 2 ) ˆ i + (2 t 2 " 3 t ) ˆ j where the result is in meters when t is in seconds. Find (a)the velocity as a function of time, (b)the acceleration as a function of time, (c)the velocity at t = 3.00s, and (d)the initial acceleration. (e)Is there a time when the acceleration is zero? v a=0 (a) a v (b) a v (c) a v (d) r v a=0 (b) x y r v a=0 (c) x y r v a=0 (d) x y (a) r v a=0 x y...
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- Fall '09
- Acceleration, Velocity, 30.0cm, 1.10M, 15.0m