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ludmilkaskok [199]
4 years ago
8

What is cos 45°?A. 1B. 1/sqrt of 2

Mathematics
1 answer:
Damm [24]4 years ago
8 0
Cos 45 is option B! :)
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The relevant formula that we can use in this situation is:

v = v0 + at

where v is the final velocity, v0 is the initial velocity = 20 km/hr, a is acceleration at 3.4 m/s^2 and t is time at 20 seconds

First convert v0 to m/s, v0 = 5.56 m/s

v = 5.56 m/s + 3.4 m/s^2 * 20 s

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Then convert back to km/hr:

<span>v = 264.82 km/hr</span>

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