Pls help this is due right now 1.) Landing with a speed of 79.6 m/s, and traveling due south, a jet comes to rest in 965 m. a.) Assuming the jet shows with constant acceleration, find the magnitude and direction of its acceleration. B.) to the south or to the north?

2.) a firefighter slides down a pole in a fire station with an acceleration of 8.2 m/s2. If the firefighter starts at rest and slides for a distance of 3.7 m , what is his final speed?

3.) a baseball player is dashing toward home plate with a speed of 3.0 m/s when she decides to hit the dirt. She slides for 1.5 s , just reaching the plate as she stops. A. What’s her acceleration? (Assume her running direction is the positive direction.) B. How far does she slide?

4.) when you see a traffic light turn red, you apply the brakes and stop with constant acceleration. If your initial speed was 28 m/s , what’s your average speed during braking?

Ingrid wrote the hypothesis below. if the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart. what are the variables in her hypothesis?

The slotted link is pinned at o, and as a result of rotation it drives the peg p along the horizontal guide. compute the magnitude of the velocity and acceleration of p along the horizontal guide. compute the magnitudes of the velocity and acceleration of p as a function of θ if θ=(3t) rad, where t is measured in seconds.

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.