Question

. A car is moving at a velocity of 20m/s. The brakes are applied to retardation it at the rate of 3m/s². What will be the velocity after 6 s of applying the brakes ? * do notsam pls.​

Answer 1

Answer:

Explanation:Acceleration, a=  

Time

v  

final

​

−v  

initial

​

 

​

 

Therefore, −2m/s  

2

=  

5s

v  

final

​

−20m/s

​

 

v  

final

​

=10m/s

​

​

 

​

 

 

Answer 2

Answer:

2m/s

Explanation:

acceleration = V - U

---------

T

so,

-3 = V - 20

---------

6

-18 = V - 20

2 = - V

V = 2

Therefore velocity after 6 s is 2 m/s.