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A car accelerates from rest at a rate of 2 m/s². What is its speed after 5 secon
A car accelerates from rest at a rate of 2 m/s². What is its speed after 5 seconds? (2023)
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A car accelerates from rest at a rate of 2 m/s². What is its speed after 5 seconds? (2023)
5 m/s
10 m/s
15 m/s
20 m/s
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Using the formula v = u + at, where u = 0, a = 2 m/s², and t = 5 s, we get v = 0 + 2 * 5 = 10 m/s.
Questions & Step-by-step Solutions
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Q: A car accelerates from rest at a rate of 2 m/s². What is its speed after 5 seconds? (2023)
Solution:
Using the formula v = u + at, where u = 0, a = 2 m/s², and t = 5 s, we get v = 0 + 2 * 5 = 10 m/s.
Steps: 7
Show Steps
Step 1: Identify the initial speed (u). Since the car starts from rest, u = 0 m/s.
Step 2: Identify the acceleration (a). The problem states that the car accelerates at a rate of 2 m/s², so a = 2 m/s².
Step 3: Identify the time (t). The problem states that the time is 5 seconds, so t = 5 s.
Step 4: Use the formula for final speed (v). The formula is v = u + at.
Step 5: Substitute the values into the formula: v = 0 + (2 m/s² * 5 s).
Step 6: Calculate the result: v = 0 + 10 m/s = 10 m/s.
Step 7: Conclude that the speed of the car after 5 seconds is 10 m/s.
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