A car decelerates from $22$ m$/$s to $17$ m$/$s while climbing a $20-$m$-$tall hill. Assuming negligible changes in internal energy and no significant interactions with the surroundings, select the most accurate statement below. The acceleration of gravity is $9\mathrm{.}8$m$/$s$^2$

SELECT

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The driver used the accelerator while going up the hill.

The driver used the brakes while going up the hill.

The driver didn$$t use the accelerator or the brakes while going up the hill.

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Which of the following statements about heat and work transfer is true:

Heat and work are path functions.

Heat and work occur at the boundary of a system and within a system.

Heat and work are defined at the initial and final state of a system.

Heat and work are properties of a system.

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