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final velocity

Asked Dec 11, 2011, 09:51 AM — 3 Answers
a car, initially at rest, is accelerated at 10m/s^2 over a distance of 40m.
what will the final velocity of the car be after is has travled 40m?

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3 Answers
ebaines's Avatar
ebaines Posts: 10,055, Reputation: 5539
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#2

Dec 12, 2011, 08:22 AM
Use the formula



where Vf = final velocity and Vi = initial velocity, which you know is zero. From this you can calculate Vf.
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Aurora2000's Avatar
Aurora2000 Posts: 111, Reputation: 83
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#3

Dec 12, 2011, 08:26 AM
Use the formula



where are respectively final velocity, initial velocity, acceleration and distance traveled.
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Aurora2000's Avatar
Aurora2000 Posts: 111, Reputation: 83
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#4

Dec 12, 2011, 08:29 AM
Ops, I posted at the same time as ebaines (the screen did not refresh so I could know this only after clicking "Answer" icon, an admin can delete this my post without problems)...
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