Physics (AS & A Level) · Oct / Nov 2018 · Paper 11 · Question 7

Water is pumped through a hose-pipe at a rate of 90 kg per minute. Water emerges horizontally from the hose-pipe with a speed of 20 m s⁻¹. What is the minimum force required from a person holding the hose-pipe to prevent it moving backwards?

1. A30 N
2. B270 N
3. C1800 N
4. D108 000 N

As printed in the paper