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Define watt. Express kilowatt in terms o...

Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 m//s ?

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### Step-by-Step Solution: **Step 1: Define Watt** - A Watt (W) is defined as the power of a body that does work at the rate of 1 Joule per second. - Therefore, we can express this as: \[ 1 \text{ Watt} = 1 \text{ Joule/second} \] ...
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