Question

the brakes applied to a cap produce a negative accelaration of 12 ms^-2 . if the car stops after 2 seconds , the initial velocity of the car is? PLEASE ANSWER STEP BY STEP ITS A REQUEST I WILL MARK THE PERSON BRAINLIEST

Answer 1

Answer:

okay the explanation is like this I can't explain you because it is very big topic dear sorry

Answer 2

Hi,

Here is your answer

Given:

Acceleration(a)= -12m/s²(It is taken as negative since it is deceleration.)

Final Velocity(v)= 0m/s

Time taken=2s

To Find:

Initial velocity(u)

Solution:

By the first equation of motion

We know that

v=u+at

Substituting the given datas in the equation

We get,

0=u+ -12×2

u=24m/s

Notes:

The three equations of motion are

• v=u+at
• s=ut+1/2at²
• v²-u²=2as

Hope this helps you.