It takes 160 kj of work to accelerate a car from 24.0 m/s to 27.5 m/s. what is the car's mass?

Work-Energy : W = 1/2 m (Vf^2 - Vo^2)

Vo = 24.0 m/s Initial speed

Vf = 27.5 m/s Final speed

W = 1/2 m (Vf^2 - Vo^2)

160 kj = 1 / 2 m (27.5^2 - 24.0 ^2)

160kj = 4680 x m

convert kilo joules to jeoules 160000 j = 4689 xm

m = 160000 j/4689

m = 34.18 kg