Respuesta :

AL2006
1 watt = 1 Joule per second
1 kW = 1,000 watts = 1,000 J/s
1 hour = 3600 seconds
==> 1 kWh = 3,600,000 Joules

Kinetic energy:  KE = 1/2 m v²

3,600,000 J = (1/2) (1,000 kg) (v²)

v² = (3,600,000 J) / (500 kg)  = 7,200 m²/s²

v = √ (7,200 m²/s²)  =  84.8 m/s   (about 190 mph)   

The car is moving with the speed possess kinetic energy. The velocity of the car is  84.8 m/s  

What is kinetic energy?

Kinetic energy is the ability to do work by virtue of its motion.

Kinetic energy is represented s

K.E = 1/2 mv²

Mass of car is  1000 kg moving with a kinetic energy of 1.0 kWh

1 kWh = 3,600,000 Joules

Substituting the value into the kinetic energy expression to get the velocity.

3,600,000 J = (1/2) (1,000 kg) (v²)

v² = (3,600,000 J) / (500 kg)

v  =  84.8 m/s  

Thus, the velocity of the car is  84.8 m/s.

Learn more about kinetic energy.

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