What’s the difference between var and val?

Answer in the below {plz mark me as brainlist:)}

Explanation:

The difference between val and var is that val makes a variable immutable — like final in Java — and var makes a variable mutable. Because val fields can't vary, some people refer to them as values rather than variables.

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.