Question

Two cars are moving with velocities 34km/h and 54km/hr.Find the ratio of their kinetic energy if mass of the cars are 400kg and 600kg

Answer 1

Hey mate here we

*Step- by -Step*

$first \: we \: have \: to \: see \: the \: formula \: for \: kinetic \: energy \\ k.e \: = \frac{1}{2} {mv}^{2} \\ \: now \: we \: will \: see \: one \: by \: one \\ k.e1 = \frac{1}{2} \times 400 \times ( {34 \times \frac{1000}{3600}) }^{2} \\ k.e.2 = \frac{1}{2} \times 600 \times ( {54 \times \frac{1000}{3600} )}^{2} \\ k.e1 = 200 \times 89.189 = 17837.82 \: jouls \\ k.e1 = 17.837\: kj\\ k.e2 = 300 \times 225 = 67500 \: joules \\ k.e2 = 67.50 \: kj \\ now \: their \: ratio \\ \frac{k.e1}{k.e2} = \frac{17.837}{67.50} kj \\ \: i \: hope \: this \: will \: help \: u \: \\ mark \: me \: as \: brainliest$

thank u