What prevents geologists from exploring earth's interior?

Ajogger accelerates from rest to 4.86 m/s in 2.43 s. a car accelerates from 20.6 to 32.7 m/s also in 2.43 s. (a) find the magnitude of the acceleration of the jogger. (b) determine the magnitude of the acceleration of the car. (c) how much further does the car travel than the jogger during the 2.43 s?

What are similarities and differences of reflection, refraction, diffraction and absorption?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration