A car is traveling with an initial velocity of 15 m/s when the driver
decides to go faster by accelearting at 5 m/s2 for 10 seconds. How far
did the car travel during this time?

300m
70m
175m
400m

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

If a simple machine reduces the strength of a force, what must be increased?

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