How has the discovery of DNA affected the classification of protists? Select three options.

1)Many scientists want to get rid of the kingdom Protista.
2)Some organisms have been moved out of the kingdom Protista.
3)Classification is generally easier and less complex.
4)It has been determined that protists share a common ancestor.
5)Some organisms have been moved into the kingdom Protista.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.