test0412 - Page 2 6 The horizontal and vertical components...

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Page 2 6. The horizontal and vertical components of the initial velocity of a football are 24 m/s and 7 m/s respectively. What is the initial velocity of the football? , J (V 7 I a. 31 m/s Voy ""'" ,2.A1'l j I ", = /"}) @25m/s p c. 17m/ s I "l- -z. - d. 42 m/s Vo .: J ~I('). -t'-4./" ..=:: 21.1 f 7 7. Assuming that it the brakes, what where the driver comes to a stop) to the brakes is a. 93 m b. 87 m (C) 182 m cr. 175 m takes 0.20 s for the driver to react before applying is the stopping distance (the distance from the point first sees the need to stop to the point where the car for a car traveling at 35 m/s if the deceleration due 3.5 m/s2? -Co =:°1 i,~ 0, 10 ~ 1/ A( I/o \/ _ V 1. =: 5 ;-(0.7..)':: 7. (J f1'\-- 2. ..~ l", - <J , V, I ~ "l. 2 ~ )(1 -:><-, .:: - .......... L- ----"~~~ t. V~.:: V, +2C{ (X; -XJ __ ~2.. _ -t.o -t, t<. V =:0; V,.:d o , ,- £F-3?j ~ 17r,.., X-t..o+..l=17:;+7 A person walks 8.0 m In a stralght llne east of north and ends up 4.0 m
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