In an experiment, a metal ball is dropped into a viscous liquid. The terminal velocity of the ball in the liquid is measured.
The experiment is repeated four times. For each repeat, a change is made to one of the following.
1- the density of the metal of the ball
2- the height from which the ball is dropped
3- the density of the liquid
4- the depth of the liquid
Which two changes separately affect the terminal velocity of the ball in the liquid?
1 )
1 and 2
1 and 3
3 )
2 and 4
4 )
3 and 4
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