An object of mass 100g placed at 10cm mark
on a uniform rule
makes the rule
settle horizontally on a fulcrum
Placed at the 35.cm mark.
Determine the
mass of the wood

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

What is the speed of an object at a given moment?

As the distance from a magnet increases, what happens to the magnet force?