Answer :
The kinetic energy of the sports car is 630 KJ.
The kinetic energy is the energy possessed by the system by virtue of its motion.
- Also kinetic energy is equal to the net work done on the object.
KE = ΔW
- The SI unit of the kinetic energy is joule (J).
- The formula to calculate the kinetic energy is KE = (1/2)*m*v²
Where,
m = mass of the object
v = speed at which the object is moving
- Kinetic energy depends on the speed squared of the object. This means that when an object's speed is doubled, its kinetic energy is quadrupled.
Mass of the car = 1400 Kg
Velocity of the car = 30 m/sec
KE = (1/2)*1400*(30)²
KE = (1/2)*1400*900
KE = 630000 J
KE = 630 KJ
The kinetic energy of a 1400 kg sports car travelling down the road with a speed of 30 m/s 630 KJ.
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