Physics2AExam1W10

Physics2AExam1W10 - c Calculate the magnitude and direction of the displacement vector 3 3 A projectile is thrown from the edge of a building with

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0 DO NOT TURN THIS PAGE!!!!! Name: _________________________________ Physics 2A Winter 2010 Exam 1 MAKE SURE TO SHOW ALL WORK IN COMPLETE DETAIL. NO CREDIT WILL BE GIVEN IF NO WORK IS SHOWN. EXPRESS ALL ANSWERS IN SI UNITS.
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1 1. At a construction site a pipe wrench fell from rest and struck the ground with a speed of 30 m/s. ( 10 pts) a) Calculate the height it was dropped from. b) Calculate how long it was falling. c) Draw the graph of a vs t, v vs. t, and y vs. t.
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2 2. In the figure below, a radar station detects an airplane approaching directly from the east. At first observation, the plane is at d 1 = 370 m from the station and at θ 1 = 40 o above the horizontal. The airplane is tracked through an angular change Δθ = 130 o ; its distance is then d 2 = 780 m. (10 pts) a) Sketch the displacement vector of the plane in the figure below. b) Find the displacement of the plane during this time in unit-vector notation.
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Unformatted text preview: c) Calculate the magnitude and direction of the displacement vector. 3 3. A projectile is thrown from the edge of a building with an initial speed of 65.0 m/s at an angle of 37 o with the horizontal. The height of the building is 150 m. See figure below. (10 pts) h = 150 m 37 o 65 m/s V o = X a) Calculate the time for the projectile to strike the ground. b) Calculate the range X of the projectile. 4 4. A clock has a second hand of length 20 cm. From the 12 P.M mark to the 9 P.M mark, for the tip of the second hand, : a) Calculate the displacement vector in unit-vector notation. b) Calculate the average velocity vector in unit-vector notation. c) Calculate the period of rotation. d) Calculate the speed. e) Calculate the instantaneous acceleration vector in unit-vector notation as it passes through the 6 P.M mark. f) Calculate the average acceleration vector in unit-vector notation....
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This note was uploaded on 09/02/2011 for the course PHYS 2A taught by Professor Luna during the Fall '09 term at DeAnza College.

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Physics2AExam1W10 - c Calculate the magnitude and direction of the displacement vector 3 3 A projectile is thrown from the edge of a building with

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