Question

A car traveling at a speed of 30.0m/s encounters an emergency and comes to a complete stop how much time will is take for the car to stop if it decelerates at 4.0m/s

Answer 1

7.5 s

Step-by-step explanation:

the reason for this is the deceleration is 4.0m/s divide 30.0m/s by 4.0m/s to get 7.5

Answer 2

It will take seven and a half seconds to stop, this is beacuse

v=u+at

∴.0=30−4t

∴t=30/4=7.5s

Hope this helps, have a blessed day! :-)