Answer :
The speed of the cart after 3 seconds of Low fan speed is (2) cm/s. This is further explained below.
What is speed?
Generally, speed is simply defined as the rapidity of movement or efficiency of operation.
In conclusion, After 8 seconds with the fan set at Low, the cart will have traveled 1 cm/s. After three seconds at medium fan speed, the cart travels at a velocity of two centimeters per second.
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