Hello,
Your answer to this problem is 400/3
Hope this helps!
Velocity is defined as a change in position.
I believe it is noise pollution
Beaker would be most appropriate for measuring the approximate volume of a liquid.
you can find it using the equation: potential energy=mass*gravitational acceleration*height.
energy=50kg*9.8N/kg*40m=19600Nm=19600J or 19.6kJ
Sometimes they use 10 instead of 9.8 for the g constant.
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