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Physics, 13.09.2019 21:30 jay555538

Apool ball is rolling at a velocity of 12 cm/s to the right when it is hit by another ball. it continues moving right at a velocity of 21 cm/s. if the collision lasts 0.45 seconds, what is the ball's acceleration?
a.+9 cm/s2
b.20 cm/s2 to the right
c.26 cm/s2 to the right
d.+46 cm/s2

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