quiz2 - UD PhysZO7W09 Quiz 2 Name You must show all of your...

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Unformatted text preview: UD PhysZO7W09 Quiz 2 Name You must show all of your work for credit. lnclude units with your numerical answers. 1)[3] Given vectors A=4i+2j, B=2j, and C=~2i. What is R=A+ZB-C ? a) Show graphically on the graph given (A {a : @fi’tad’”\ + M 33) —-( 213% b) And in unit vector notation K ~— 45: +3; +93” + 9.1: at an angle of30° with the level field. The uprights are 50 m from the point at which the ball is kicked and the horizontal bar is 5m from the ground. a) At what time after the kick will the ball pass the goal posts? b) ls the kick successful, by how many meters does the ball clear or pass beneath the bar? UD PhysZO7W09 Quizz Name @16‘ % You must show all of your work for credit Include .unitsKvith your numerical answers. 1)[3] Given vectors A=1i+3j, B=2j, and C=3i. What is“: +2 B-C ? a) Show graphically on the graph given b) And in unitvector notation: . R; -_—~_ (Ii/+368 +2éijh> “ (32> ' * g i z 5: +33» + city—3; ,_,» , _, }_ . \L) _ a: +7~ ( 2)[7] A batter hits a pitched ball at a height of ‘ projection is 45° relative to the horizontal and its initialvelocityis 110 ft/s. The ball is fair down the left field, line where a 24 ft tall fence is located 32 0ft from home plate. g=32 ft/s2 a] At what time after the player hits the ball will it reach the distance of the fence? bJWill the ball clear the fence? If so, by how much, how much above or below the top of the fence? VD ...
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