What physics is involved for a passenger feeling pushed backward into the seat of an airplane when it accelerates along the runway during takeoff?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane