PDF chapter test TRY NOW

 What is the work to be done to increase the velocity of a car from \(30\ kmh^{–1}\) to \(60\ kmh^{–1}\) if the mass of the car is \(1500\ kg\)?
 
The initial kinetic energy of an object of mass (\(m\)), moving with a initialvelocity, (\(u\)) is given by the expression,
 
Eki=ii×i×ii
 
The final kinetic energy of an object of mass (\(m\)), moving with a finalvelocity, (\(v\)) is given by the expression,
 
Ekf=ii×i×ii
 
Work to be done to increase the velocity is,
 
 
Substitute the values,
 
Work to be done to increase the velocity \(=\)  \(J\)