The driver of an suv slammed on the breaks when he saw a, Ask an Expert

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The driver of an SUV slammed on the breaks when he saw a tree 52 m away blocking the road. The SUV slowed down at a constant rate of 4.0 m/s2 for 3.6 s before reaching the tree.
What was the initial speed of the SUV?
With what speed does it strike the tree?

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Reference No.:- M9519658

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