- #1
rountree85
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Homework Statement
A pickup truck has a mass of 2400 kg when empty. It is driven onto a scale, and sand is poured in at the rate of 150 kg/s from a height of 3.0 m above the truck bed. At the instant when 440 kg of sand have already been added, what weight does the scale report?
Homework Equations
$$ J=\Delta p=mv_1-mv_0 $$
$$ w=mg $$
The Attempt at a Solution
I can't quite see what this has to do with impulse, and whether or not kinematics have to be used in this at all or not.