Question

a car is tavelling at the speed of 30ms-1 declarates at the rate of 12ms-2 calculate the time taken by the car to come to rest?
plz help me​

Answer 1

Answer:

2.5s

Explanation:

u=30m/s

v=0(bcs car stops)

a=-12m/s

v=u+at

0=30+(-12)t

0=30-12t

12t=30

t=30÷12

t=2.5s