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13, An objer\'s velocity graph is given by a straight line with an x-intercept-5

ID: 1780209 • Letter: 1

Question

13, An objer's velocity graph is given by a straight line with an x-intercept-5 sec. and y-intercept-4m. What is the object's displacement in the interval fromto 5 sec? A) 5.6m B) 21.1m C) 10m D) 152m E) 4.275 m 14. A farong is a distance of 230 yads A fortnight is a tim period of 2 weeks A race horese is nunsing ypeed ot 5.5 yds per second Whst is his spood in faulonp A) 22726 B) 1130 C) 12375 D) 105600 E) 30240 IS. Al the top of a chff 100 m higt Ranul theows a rock upward with velocey 27 ms How mach ater should he drogp s second rock from reat wo smultancously at the bottiom of the cf A) 3.529 sec B) 1.98 sec C) 2.97 sec D) 13.6 sec E) 8.1 sec meves into a negion whene the wind is Nowing 100 mph in a direstion 35noth of west What is the new velocity of the A) 1347.5 mph B) 472 mph C) 449 mph D) 192.5 mph E) 864 mph

Explanation / Answer

13.

displacement = area of velocity time graph = (0.5) (x-intercept) (y-intercept) = (0.5) (5) (4) = 10 m

14.

5.5 yards/second = 5.5 (yards/second) (1 forlong/220 yards) (2 x 7 x 24 x 3600 sec/1 week)

= 5.5 x 2 x 7 x 24 x 3600/220 = 30240

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