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HELP ME PLS PLS PLS- ALL MEH POINTS- WILL MARK BRAINLISET <3

At 1 kilometer (km) a runner is going 20 meters per second (m/s) after running 3.75 kilometers (km) in 100 seconds, they are moving at 30 meters per second (m/s). How fast did the runner accelerate?

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Answer:

y..............e...........s......

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