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السلام عليكم ورحمة الله وبركاته

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Three blocks, acted upon by an unbalanced force, are moving with an acceleration of
5 m/s2 as shown in the figure below, what is the net force acting on block (II)?


In the figure below, a force (FA) parallel to the ramp is required to slide a 25-kg box
a distance of 18 m at constant speed to the top of the ramp. What is the work done by
this force? (Assume no friction)


One ball is thrown straight up in the air and, at the same instant; another ball is
released from rest and allowed to fall. What graphs in the figure below represent the
motion of these balls? ("v" is the velocity and "t" is the time).