physics_ch1homework

physics_ch1homework - Chapter 1 Homework 31. A postal...

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Unformatted text preview: Chapter 1 Homework 31. A postal employee drives a delivery t ruck along the route shown. Determine the magnitude and direction of the resultant displacement by drawing a scale diagram. = . R 7 8 km at 38 N of E Page | 1 1.15.11 35. Compute the x- and y-components of the vectors A, B, C, and D A: = . = Ax 8 00 mcos270 0 m = . =- . Ay 8 00 msin270 80 0 m B: = . = . Bx 15 0mcos60 7 50 m = . = . By 15 0 msin60 13 0 m C: = . =- . Cx 12 0 incos205 10 9 m = . =- . Cy 12 0 insin205 5 07 m D: = . =- . Dx 10 0 incos143 7 99 m = . = . Dy 10 0 insin143 6 02 m 36.Let the angle be the angle that the vector A makes with the positive x-axis, measured counterclockwise from the axis. Find the angle for a vector that has the following components: (a) Ax = 2.00 m, Ay = -1.00 m = - - . . = - . + = tan 1 1 00 m2 00 m 26 6 360 333 (b) Ax = 2.00 m, Ay = 1.00 m = - . . = . tan 11 00 m2 00 m 26 6 (c) Ax = -2.00 m, Ay = 1.00 m = - .- . = - . + = tan 11 00 m 2 00 m 26 6 180 153 (d) Ax = -2.00 m, Ay = -1.00 m = - - .- . = . + = tan 1 1 00 m 2 00 m 26 6 180 207 Page | 3 1.15.11 37.A rocket fires two engines simultaneously. One produces a thrust of 725 N directly 37....
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physics_ch1homework - Chapter 1 Homework 31. A postal...

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