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**urgent!! Need find end velocity given accel., time, distance**

**1.The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows with a constant acceleration -5.90 m/s2 for 4.45 s, making straight skid marks 60.0 m long ending at the tree. With what speed does the car then strike the tree?**

so I tried to find Vo using Vo=x-at^2/2

and I plugged Vo into Vf=Vi+at and got 13.4 but it was wrong.

Please help me I am so confused.

## The Attempt at a Solution

so I tried to find Vo using Vo=x-at^2/2

and I plugged Vo into Vf=Vi+at and got 13.4 but it was wrong.

Please help me I am so confused.