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posted by sahira Monday, March 25, 2013 at 8:22pm.
after 30s, a runner is spriting at 3m/s. But, 10s later, the runner is sprinting at 3.8m/s. What is the runner's acceleration during this time?
a=(V2-V1)/(T2-T1)=(3.8-3)/(40-30)=0.08m/s^2.
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