afoakwacosmos
27.05.2021 •
Physics
Two vehicles A and B are moving in the opposite directions with the velocities of 20m/s and 25m/s respectively from the same place at the same time. Calculate the relative velocity of vehicle A with respect to vehicle B after 1 second.
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Ответ:
the rate that the energy of a system is transformed
Explanation:
We can define energy as the capacity or ability to do work. Power is defined as the rate of doing work or the rate at which energy is transformed. It can also be regarded as the time rate of energy transfer. In older physics literature, power is sometimes referred to as activity.
Power is given by energy/time. Its unit is watt which is defined as joule per second. Another popular unit of power is horsepower. 1 horsepower = 746 watts.
Very large magnitude of power is measured in killowats and megawatts.