Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?

If a balloon is taken outside on a very cold day, what will occur?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

How does an observation about an object differ from an inference about that object