Explanation:
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¡Hello!
Carbon monoxide is an odorless, colorless and tasteless gas produced by the incomplete combustion of carbon in fossil fuels such as wood, propane, charcoal, oil, gas, coal or other fuel.
Its like newtons 3rd law that once in motion a outer force has to stop it
The power applied to move the box anywhere is
(20 n) x (distance moved) / (time to move the distance) .

Actually Welcome to the Concept of the kinematics of a body.
Since, we know that Velocity = Distance / time
hence, V = 20/5 = 4 m/s
hence the velocity of the RC car is 4 m/s westwards direction.