oh ok, does that mean that the kinetic energy will be the same as the loss of potential energy then? But still, how do i work out the speed and momentum?
An egg of mass 5.8*10^-2 is dropped from a height of 1.5m onto a floor. Assuming air resistance is negligable, calculate for the egg:
a) loss of potential energy.
b) the kinetic enrgy just before impact.
c) the speed just before impact
d) the momentum just before impact.
So far i have...
The wind in a severe storm is blowing 30 ms perpendicularly to the wall of a large barn of area 80 m2. Calculate the pressure exerted on it, assuming that the air density is 1.3 kg m3.
I am quite new to this unit so i really have no idea what to do. Any help apreciated!