What is the work to be done to increase the velocity of a car from 30 km/h to 60 km/h if the mass of the car is 1500 kg ?
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30km/hr = 30(5/18)m/s→ v1
60km/hr = 60(5/18)m/s→ v2
Work Done = ∆K.E.
Work Done = ½m(v2)²-½m(v1)²
Work Done = ½m[(3600-900)(25/324)]
Work Done = ½1500[(2700)(25/324)]
Work Done = 156250J
60km/hr = 60(5/18)m/s→ v2
Work Done = ∆K.E.
Work Done = ½m(v2)²-½m(v1)²
Work Done = ½m[(3600-900)(25/324)]
Work Done = ½1500[(2700)(25/324)]
Work Done = 156250J
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