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OpenStudy (anonymous):
A cyclist accelerates from 0m/s to 8m/s in 3 seconds. What is his acceleration? Is this acceleration higher than that of a car which accelerates from 0 to 30 m/s in 8 seconds?
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OpenStudy (queelius):
Assuming constant acceleration, then v(t) = a*t
OpenStudy (queelius):
We are given that v(3) = 8.
OpenStudy (queelius):
Thus, a*3 = 8. Solve for a?
OpenStudy (anonymous):
Assuming acceleration is constant, acceleration of cyclist = ( V(f) - V(i) ) / t = (8-0)/3 = 2.67 ms-2 acceleration of car = (30-0)/8 = 3.75 ms-2 Hence, acceleration of cyclist is not higher than that of car.
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