Object A (m 1 = 3 kg) is resting on the frictional horizontal surface (the coefficient of kinetic friction is 0.4) and is connected to the second object
(m 2 = 9 kg) by an unextendable string passing over a massless pulley. When
the hanging block (9 kg) is released from rest, the system starts to move.
a) Draw a free-body diagram for both objects.
b) Find the acceleration of the system.
c) Find the tension on the string.

What is the measure of a change in an objects velocity?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

Newtons view of arrangement of the universe