Question

the brake applied to a car produces a acceleration of 8m/second square in opposite direction of motion if it takes 3 seconds to stop after application of brake then the distance travelled by it in given time will be

Answer 1

Hii..
Here is your answer..

Solution:-
Acceleration= (-8m/s)
Time =3 seconds
Final velocity=0
Initial velocity=?

By using the equation:-
v=u+at
0=u+(-8×3)
-u= -24
u=24

Now,
we will find Distance by using equation:-
$= > {v}^{2} = {u}^{2} + 2as \\ = > {(0)}^{2} = {(24)}^{2} + 2 \times ( - 8) \times s \\ = > 16s = 576$
$= > s = \frac{576}{24} \\ = > s = 36$
Hence,he travelled 36m

Hope it helps uh...✌️✌️✌️