Let A= (3.0 m, 20 0 south of east), B = (2.0 m, north), and C= (5.0 m, 70 0 south of west).
a. Draw and label A , B, and C with their tails at the origin. Use a coordinate system
with the x-axis to the east.
b. b. Write A, B, and C in component form, using unit vectors.
c. c. Find the magnitude and the direction of D = A + B+ C.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.