Respuesta :
Answer: 2. 2.0*10^2 W
Explanation:
Power = Work/Time
Power = (2.0*10^3) Joules/10 seconds
Power = 2.0*10^2 Watts
The average power developed by the car engine while it is accelerating is [tex]2*10^2 W[/tex]
What is acceleration?
Acceleration is the rate of change of the velocity of an object with respect to time. It is a vector quantity.
The equation for acceleration is
a = Δv / Δt
where a is acceleration,
Δv is the change in velocity,
Δt is the amount of time it took for that change to occur.
The unit is meter per second square.
There are two ways by which an object can accelerate. One is to change the speed and other one is to change the direction. Even you can change both at same time.
What is power?
Power is the amount of energy transferred or converted per unit time. It is a scalar quantity. Its unit is joule per second and also called watt. It is given by
Power = W/t
Where W is work done.
t is time taken.
What is watt?
Watt is the power needed to do one joule of work in one second.
What is energy?
The capacity to do work is called energy. Its unit is Joule.
Given: work = [tex]W = 2*10^3 J[/tex]
Time = 10 s
Power is given by
Power = Work/Time
[tex]P = 2*10^3/10[/tex]
[tex]P = 2*10^2 W[/tex]
Hence, power develop by car is [tex]2*10^2 W[/tex].
To learn more about Power here
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