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Question

# a. What is the formula used to calculate the acceleration of an object moving in a straight line? b. A cyclist's speed changes from $0 \mathrm{~m} / \mathrm{s}$ to $15 \mathrm{~m} / \mathrm{s}$ in 10 seconds. What is the cyclist's average acceleration?

Solution

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a) The equation for the acceleration for the object moving in a straight line is:

$a= \frac{v_f - v_i}{t}$

where $v_f$ is the final speed, $v_i$ is the initial speed, and $t$ is the time.

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