a car slows down at -5.00 m/s ^2 until it comes to a stop after travelling 15.0 m . what was the initial speed of the car ?

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What are the three ways that an object can accelerate

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water