While traveling along a highway, a driver slows from 24 m/s to 15 m/s in 12 seconds. What is the automobile’s acceleration? (Remember that a negative value indicates a slowing down or deceleration.)

Explanation:

Given: A driver slows from to in seconds.

To find: The acceleration of the automobile.

Solution: We have,

Initial velocity, .

Final velocity, .

Time, seconds.

We know that acceleration,

.

Hence, the acceleration of the automobile is . The automobile is slowing down with an acceleration of  .

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.