Sometimes she is herself, sometimes she is a woman of 80 who can't walk, and sometimes she is eight.
Jessica appears to be suffering from:

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?