In the figure below, m; = 10.5 kg and my - 4.5 kg. The coefficient of static friction between m, and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. (a) If the system is released from rest, what will its acceleration be?
(b) If the system is set in motion with my moving downward, what will be the acceleration of the system?

Can anybody me with this? ? (picture included.)

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !