1. Two forces act on a box as follows: F1 = 100 N at 01 = 170° and F2 = 75 N at 02 = 30°. Find their resultant force on the box.

(a) the magnitude of vector sum Fi + F2

(b) the direction of of the vector sum Fi + F2

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?