6) Shane is riding his bike at a speed of 10m/s. He isn’t watching carefully where he is going and almost hits a tree. He abruptly hits the brakes to stop in a time of 4 seconds. What is his acceleration? Show your work.

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?