A hockey player skates across a rink of length 75 m in 8.9 seconds. a. What is the average speed of the hockey player? (2 points)

b. The hockey player is moving at a speed of 9.5 m/s. If it takes him 2 seconds to
come to a stop under constant acceleration, how far does he travel while
stopping? (2 points)

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

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?

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