What is the work needed to be done to increase the velocity of a car from 30kmh_1 to 60kmh_1 if the mass of the car is 1500kg
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Answer:
Step-by-step explanation:
The kinetic energy at
30 km/hr=30 *1000/3600=300/36=25/3 m/s
so 60 km/hr=50/3 m/s
Difference oin kinetic energy
=E2-E1=1/2 *m( v₂²-v₁²)
=1500/2*{ (50/3)²-(25/3)²}
=750/9* ( 2500-625)
=(750/9)*1875
=156250J =156.250 KJ
Please correct me if I am wrong
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