How fast is the car going at the end of the braking period


A car starts from rest and travels for 7.0 s with a uniform acceleration of +1.0 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.5 m/s2. If the brakes are applied for 3.0 s, how fast is the car going at the end of the braking period? How far has it gone from its start?

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Physics: How fast is the car going at the end of the braking period
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