Does anyone know?

Question

1.)How can u determine velocity from a displacment-time graph?

2.)Compare and contrast instantaneouse and average velocity?

3.)In what units is acceleration measured? Compare the two different ways of expressing that unit?

4.) how can we determine the rate of acceleration from a velocity-time graph?

5.) what is Galileo's "Law of falling bodies"?

Answer 1

Five questions for ten points!

Average velocity is displacement divided by time. If time is the horizontal axis, average velocity is rise over run.

Instantaneous velocity is the slope of the displacement-time line at any point. Average velocity is rise over run for any segment of the graph.

Acceleration in the metric system is meters/sec/sec. In the English system it is feet/sec/sec.

Acceleration is the slope of a velocity-time graph. Instantaneous acceleration is the slope of the graph at any point. Average acceleration is rise over run for any piece of the graph.

Distance is proportional to the square of the time of fall.