A particlemoves according to a law of motion s = f(t), t is greater than orequal to 0, where t is measured in seconds and ? infeet.
f(t)=t^2 •e^(-t)
a) finevelocity at rime t and after 1 second
b) when isthe particle at rest
c) fine theacceleration at time t and after 1 second
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