if you held a stone over the mouth of a well and then let it go , what would happen to the stone?Explain your answer.

Can someone explain to me how to do this problem ?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603