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Example 11.4 What is the work to to increase the velocity of a car from30 km h-1 to 60 km h-1 if the mass ofthe car is 1500 kg?​

Answer»

provided with initial velocity (u) as 30 km/hr and final velocity (V) as 60 km/hr and we are also given the mass of car (m) = 1500 KG. And we are ASKED to find the work done by the car. To solve this question first we have to convert the initial velocity and final velocity from km/hr to m/s. and after converting the units to m/s we will find the work done by the car by using given below FORMULA :Work done = Change in Kinetic energyNow, we have to simply plug in the known values in the above given formula and we GET our final answer. So, Let's do it :



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