Water from a fire hose is directed horizontally against a wall at a rate of 41.0 kg/s and a speed of 18.4 m/s. Calculate the magnitude of the force exerted on the wall, assuming the water's horizontal momentum is reduced to zero.

Question

Physics

Easton Rios

25 December, 09:06

Water from a fire hose is directed horizontally against a wall at a rate of 41.0 kg/s and a speed of 18.4 m/s. Calculate the magnitude of the force exerted on the wall, assuming the water's horizontal momentum is reduced to zero.

+1

Answers (1)

Know the Answer?

Zara Melendez · Answer 1

754.4 N

Explanation:

Follow the units. Force = (mass[kg]) • (acceleration[m/s²])

Newtons (N) are in the units kg-m/s²

*The bit about horizontal momentum going to 0 is likely just to rule out the fact that the full force of the water might not be exerted in all situations.*

So (18.4 m/s) • (41.0 kg/s) = 754.4 N of force.