A girl pushes a box across a desk. The girl does not move, but the box moves at a constant speed to the right. Classify the following as either forces on the girl or forces on the box or both. Static Friction
Sliding Friction
Push to the right
Push to the left
Air resistance

Forces on the Grid:

Forces on the Box:

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

If forces acting on an object are unbalanced. true or false

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.