4.Imagine a spider with mass 7.0 x 10-5 kg moving downward on its thread. The thread exerts an upward force on the spider of 1.2 x 10-4 N. a.What is

4.Imagine a spider with mass 7.0 x 10-5 kg moving downward on its thread. The thread exerts an upward force on the spider of 1.2 x 10-4 N. a.What is the acceleration of the spider?b.Explain the sign of the acceleration and describe in words how the thread changes the velocity of the spider. would also like to know how to get to the answer can any one explain this to me in english?