Directions: 1. Review how to use the timer.
2. Record your travel style and time in the chart below:
Student
Style
Time to travel
10m-42 steps in seconds
Speed during travel style
(m/s)
Running
Walking
Walking Backwards
Skipping
2 foot hopping
Sideways
3.
Calculate your speed for each style of movement at 10m. Remember speed equals distance divided by time. Sed/t. Do not forget to
show your work.
Create a bar graph using the provided data in the following chart. Travel style should be on the x-axis and speed should be on the y-
axis.
4.

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.

What’s #16 asking and how do i solve it?