Question

If a vehicle is traveling at constant velocity and then comes to a sudden stop, has it undergone negative acceleration or positive acceleration? Explain your answer

Answer 1

Negative acceleration

Step-by-step explanation:

Let us assume a vehicle is moving with a constant velocity u and then it comes to a sudden stop.

The initial velocity of the vehicle is u and finally it comes to rest, it means final velocity is 0.

As we know that,

Acceleration is equal to change in velocity divided by time taken.

`a=(v-u)/(t)\\\\\text{Put v=0}\\\\a=(-u)/(t)`

We can see that the value of acceleration is negative. Hence, it leads to negative acceleration.