An average force of 45 kN45\text{ kN}45 kN acts on the air passing through a jet engine. This force causes the speed of the air to increase by 500 m s-1.
What mass of air passes through the engine in one minute?
1.1×10−2 kg1.1 \times 10^{-2}\text{ kg}1.1×10−2 kg
1.5 kg1.5\text{ kg}1.5 kg
90 kg90\text{ kg}90 kg
5400 kg5400\text{ kg}5400 kg
