Question1

Jim's dog Sparky runs 45.0 northeast to a tree, then 70.0 west to a second tree, and finally 25.0 south to a third tree.

1) Compute Sparky's net displacement vector.

Enter the east and north components of the net displacement

2) estimate the magnitude of Sparky's net displacement. (Meters)

3) compute the direction of Sparky's net displacement (degrees)

Question2

System consists of two small bodies of masses m1 and m2 connected by a light outspread spring of spring cont. k. At time t= 0 the bodies are given initial velocities u1 and u2 and let fall under gravity. Find out the total momentum of the system as a function of time and position vector of CM w.r.t. the original position of the system. Ignore the air drag.