How far has it gone from its start

Reference no: EM1320315

Q1. A car starts from rest and travels for 8.80s with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes, cause a uniform acceleration of -2.0 m/s2. If the brakes are applied for 2.0 s, how fast is the car going at the end of the braking period? How far has it gone from its start?

Q2. A person wearing a safety belt can withstand an acceleration of -3.0 x 10^2 m/s2. How thick must barriers be to safely stop a car that hits a barrier at 112 km/h?

Reference no: EM1320315

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