Define the term impulse of a force.
A spacecraft takes off vertically. Its rocket engines eject exhaust gases vertically downwards.
The exhaust gases are emitted with a velocity of 1600 m/s1600\text{ m/s}1600 m/s and at a rate of 2200 kg/s2200\text{ kg/s}2200 kg/s.
Show that the upward force exerted on the spacecraft by the exhaust gases is approximately 3500 kN3500\text{ kN}3500 kN. State the equation you use.
Calculate the maximum mass of the spacecraft that this force can lift from the ground. Ignore air resistance. (Take g=9.8 m/s2g = 9.8\text{ m/s}^2g=9.8 m/s2.)
78 exam-style questions on CIE IGCSE Physics Momentum, covering Momentum. Each one has a worked solution and a mark scheme showing where the marks go.