A)
Interpretation:
The force of gravity acting on the box has to be determined.
Concept introduction:
The force of gravity acting on the box:
Here, mass is M and acceleration is a.
B)
Interpretation:
The work required to lift the box from the ground to roof of the building.
Concept introduction:
The work required to lift the box.
Here, force is F and distance is d.
C)
Interpretation:
The potential energy of the box when it is on the roof of the building.
Concept introduction:
The potential energy of the box
Here, gravity is g and height of building is h.
D)
Interpretation:
The velocity and kinetic energy of box when it hits the road.
Concept introduction:
The kinetic energy of the box when its hits the road.
Here, velocity is v.
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