Question

Philip drives his car at a velocity of 28 m/s he applies the break which slows the vehicle down at a rate of six. 4 m/s2 and it causes it’s to slow to stop how long does it take for the car to stop answer to the nearest 10th?

Answer 1

For this case we have that the final speed is given by:

Where,
a: acceleration
vo: initial speed
t: time
Clearing the time we have:

Substituting values we have:

it takes 4.375 s for the car to stop