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An object travels at 50 m s−1 for the first 2 seconds and travels at 70 m s−1 for the next 2 seconds. What is its average speed for the first 4 seconds? |
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Answer» An object travels at 50 m s−1 for the first 2 seconds and travels at 70 m s−1 for the next 2 seconds. What is its average speed for the first 4 seconds? |
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