Suppose you start at the position xi= 7.5 m. If you undergo a displacement of -8.3 m, what is your final position? Use the graph below to answer questions 2-6.

What is the velocity of the object’s motion as it moves in the positive direction?

What is the velocity of the object as it moves in the negative direction?

What is the displacement between t= 2s and t=8s?

What is the average velocity over the 8 seconds?

What is the average speed over the 8 seconds?

In heavy traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you stop for 3.5 minutes, and lastly you drive 15 m/s for 2.5 minutes. Plot a position vs time graph for this motion. The sketch should be 7.5 minutes long, and should be roughly accurate. Use your graph to calculate the average velocity over the 7.5 minutes.

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?