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maskedup
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Homework Statement
A fire hose sends 20 kg of water per minute against a burning building. The water strikes the building at 40.0 m/s and is deflected 60deg as shown in the figure. (a) What is the rate of change of momentum of the water? (b) What force does the building exert on the water? (c) What force does the water exert on the building? (d) what are the magnitude and direction of the force exerted by the water on the roof?
Homework Equations
momentum = mv
impulse = F * t = mv1-mv0
The Attempt at a Solution
honestly, i dun know how to approach the question at all, hope someone could help me. its under the topic momentum and collisions.