What relationship exists betwen air resistance and acceleration of falling objects

Identify the type of synthetic material used in each object

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?