Which of the following is an obstacle to creating computer-based models for tracking a hurricane?

1. hurricanes form over water, where it is difficult to observe them.
2. most sources of data about hurricanes are anecdotal and unreliable.
3. forecasters must consider a large number of variables that affect the path of the storm.
4. all of the above

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^.