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03-02-2020
Physics

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Find the initial velocity of a ball that has a final velocity of 17.9 m/s, west after it accelerated at 63.7 m/s2, west for 0.21 s

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MathPhys MathPhys

03-02-2020

Explanation:

Taking west to be positive, given:

v = 17.9 m/s

a = 63.7 m/s²

t = 0.21 s

Find: v₀

v = at + v₀

17.9 m/s = (63.7 m/s²) (0.21 s) + v₀

v₀ = 4.52 m/s

The initial velocity is 4.52 m/s west.

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