Acar is traveling at when the driver sees an accident m ahead and slams on the brakes. what constant deceleration is required to stop the car in time to avoid a pileup?

Deceleration = units/sec^2

Step-by-step explanation:

Given that a car is traveling at when the driver sees an accident m ahead and slams on the brakes.

i.e. if he is coming with speed v units/sec say, he has to make his velocity 0.

Distance travelled = m units

Initial velocity = v

Final velocity =0

Use the third formula as

So he has to apply an acceleration of units/sec^2 to stop the car in time to avoid a pile up.

Deceleration = units/sec^2

4.26 x 10^2  

Bit by bit clarification: you have to move the decimal more than 2 spots since it should be a number from 1-9. So it would be 4.26. At that point the type is positive 2 since you are moving the decimal to one side.