Question

The brakes applied to a car produce an acceleration of 6 metre per second square in the opposite direction to the options if the car takes 2 second to stop after applying the brakes calculate the distance it travels during this time

Answer 1

Answer:

12 m

Explanation:

Given:

Accerleration: a=−6

 

Time t=$2s$

Final velocity, $v=0\frac{m}{s}$

$v=u+at$

$0= u - 6 * 2$

$u= 12\frac{m}{s}$

$s= ut+\frac{1}{2}at^{2}$

​$s= 12 * 2 + \frac{1}{2} x (-6) * 4$  

⇒$s=12m$