Question: The position of an object with mass m at time t is r(t) = at 2 i + bt 3 j, 0 < t <

The position of an object with mass m at time t is r(t) = at² i + bt³ j, 0 < t < 1.
(a) What is the force acting on the object at time t?
(b) What is the work done by the force during the time interval 0 < t < 1?

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