The motor $M$ pulls on the cable with a force of $F,$ which has a magnitude that varies as shown on the graph

Part A

If the $18$ kg crate is originally resting on the floor such that the cable tension is zero at the instant the motor is turned on$,$ determine the speed of the crate when $t=8s.($Hint: First determine the time needed to begin lifting the crate.$)($Figure $1)$

Express your answer with the appropriate units.

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Value

Units

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