Osborne Gross
12/20/2023 · High School

Where \( s \) is the distance traveled by an object (in meters) with an initial velocity \( u \) (in \( \mathrm{m} / \mathrm{s} \) ) and final velocity \( v \) (in \( \mathrm{m} / \mathrm{s} \) ), seconds later. And \( s \) when \( u \) is \( 9 \mathrm{~m} / \mathrm{s}, v \) is \( 13 \mathrm{~m} / \mathrm{s} \), and \( t \) is 2 seconds. B. 44 m C. 22 m D. 15.5 m

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To find the distance \( s \) traveled by the object, we can use the formula for distance when initial velocity \( u \), final velocity \( v \), and time \( t \) are known: \[ s = ut + \frac{1}{2}(v - u)t \] Given: - \( u = 9 \, \text{m/s} \) - \( v = 13 \, \text{m/s} \) - \( t = 2 \, \text{s} \) Now, we can calculate \( s \): 1. Calculate the first term \( ut \): \[ ut = 9 \, \text{m/s} \times 2 \, \text{s} = 18 \, \text{m} \] 2. Calculate the change in velocity \( v - u \): \[ v - u = 13 \, \text{m/s} - 9 \, \text{m/s} = 4 \, \text{m/s} \] 3. Calculate the second term \( \frac{1}{2}(v - u)t \): \[ \frac{1}{2}(v - u)t = \frac{1}{2} \times 4 \, \text{m/s} \times 2 \, \text{s} = \frac{1}{2} \times 8 \, \text{m} = 4 \, \text{m} \] 4. Now, add both terms to find \( s \): \[ s = 18 \, \text{m} + 4 \, \text{m} = 22 \, \text{m} \] Thus, the distance traveled \( s \) is \( 22 \, \text{m} \). The correct answer is **C. 22 m**.

Quick Answer

The distance \( s \) is calculated using the formula \( s = ut + \frac{1}{2}(v - u)t \). Given \( u = 9 \, \text{m/s}, v = 13 \, \text{m/s}, t = 2 \, \text{s} \), the distance \( s \) is \( 22 \, \text{m} \). Correct answer: C. 22 m.
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