luver324
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A van traveling down a slope with a uniform acceleration of 2.15 meters/second2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van?
a. 0.00 meters/second
b. 3.65 meters/second
c. 4.95 meters/second
d. 35.05 meters/second
e. 120.75 meters/second

Respuesta :

AL2006
-- While gaining 2.15 m/s more speed every second, the van
would gain (2.15 x 7) = 15.05 m/s more speed in 7 seconds.

-- We're told that its speed at the end of the 7 seconds
is  20 m/s .

-- So its speed at the beginning of the 7 seconds must have been

         (20 m/s  -  15.05 m/s)  =  4.95 m/s .
C. 4.95 (: if i did my math correctly Hope it helps!!

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