Question

Examine the information. A truck accelerates 3 km/h/s south. Which option correctly describes the truck’s acceleration?

a. Every second the truck’s position increases by 3 km to the south.
b. Every hour, the truck’s velocity increases by 3 km/s to the south.
c. Every second, the truck’s position increases by 3 km/h to the south.
d. Every second, the truck’s velocity increases by 3 km/h to the south.

Answer 1

The truck's velocity increases by 3 km/h each second to the south, meaning option d is correct. This describes the truck's acceleration as a rate of change of velocity, not position. So the correct option is d.

Step-by-step explanation:

The question provided by the student regarding truck acceleration is a physics problem specifically about kinematics. The correct answer to the question 'A truck accelerates 3 km/h/s south. Which option correctly describes the truck’s acceleration?' is option d. Every second, the truck’s velocity increases by 3 km/h to the south. This is because acceleration is defined as the rate of change of velocity over time. When a value is given in km/h/s, it means for every second that passes, the speed of the truck is increasing by 3 km/h in the direction specified, which is south. It is important not to confuse this with the change in position, which is about displacement or distance traveled, not velocity.

Answer 2

d. Every second, the truck’s velocity increases by 3 km/h to the south.

Step-by-step explanation:

Acelleration can be defined as change of velocity over change of time.

That's why if we say: "A truck accelerates 3 km/h/s south."

We are saying that the acceleration of the truck variate 3Km/h wich is velocity of the truck, and it variates every second and also its direction is south.