Answer: A moderate wind accelerates a pebble over a

Chapter , Problem 18

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A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration\(\vec{a}=\left(5.00 \mathrm{~m} / \mathrm{s}^{2}\right) \hat{\mathrm{i}}+\left(7.00 \mathrm{~m} / \mathrm{s}^{2}\right) \hat{j}\). At time t = 0, the velocity is (4.00 m/s)iˆ. What are the

(a) magnitude and

(b) angle of its velocity when it has been displaced by 12.0 m parallel to the x axis?

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