Answer:
Acceleration is the change in velocity so the car is experiencing a change
in velocity and it is accelerating.
Explanation:
- Velocity is the rate of change of the position of an object per unit time. It is a vector quantity, so it has both a magnitude (the speed) and a direction:
[tex]v=\frac{\Delta x}{\Delta t}[/tex]
where [tex]\Delta x[/tex] is the change in position while [tex]\Delta t[/tex] is the time elapsed.
- Acceleration is the rate of change of velocity per unit time. Similarly, acceleration is also a vector, so it has both a magnitude and a direction:
[tex]a=\frac{\Delta v}{\Delta t}[/tex]
where [tex]\Delta v[/tex] is the change in velocity while [tex]\Delta t[/tex] is the time elapsed.
Since velocity is a vector, [tex]\Delta v[/tex] (change in velocity) is also a vector. This means that there can be a change in velocity if either two of the conditions occur:
- A change in the speed
- A change in the direction of the velocity
For an object in uniform circular motion, the speed remains constant, however the velocity keeps changing, since the direction of the velocity keeps changing. This means that a car in uniform circular motion is experiencing a non-zero acceleration.
So, the correct option is
Acceleration is the change in velocity so the car is experiencing a change
in velocity and it is accelerating.
