Practice_5 - Practice 5 (chapter 1-14) 1.

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1. If  A  = 12 – 16 j  and  B  = –24 + 10 j , what is the magnitude of the vector  B A C - = 2 ? a. 42 b. 22 c. 64 d. 90 e. 13 2. A rock is projected from the edge of the top of a building with an initial velocity of 12.2  m/s at an angle of 53 °  above the horizontal. The rock strikes the ground a horizontal  distance of 25 m from the base of the building. Assume that the ground is level and that  the side of the building is vertical. How tall is the building? a. 25.3 m b. 29.6 m c. 27.4 m d. 23.6 m e. 18.9 m 3. If  F  = 4.0 N and  m  = 2.0 kg, what is the magnitude  a  of the acceleration for the block  shown below? The surface is frictionless. a. 5.3 m/s 2 b. 4.4 m/s 2 c. 3.5 m/s 2 d. 6.2 m/s 2 e. 8.4 m/s 2 4. An airplane moves 140 m/s as it travels around a vertical circular loop which has a 1.0- km radius. What is the magnitude of the resultant force on the 70-kg pilot of this plane at  the bottom of this loop? a.
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This note was uploaded on 09/15/2008 for the course PHY 2048 taught by Professor Criss during the Fall '08 term at University of South Florida - Tampa.

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Practice_5 - Practice 5 (chapter 1-14) 1.

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