A skateboarder travels on a horizontal surface with an initial velocity of 4.0 m/s m / s toward the south and a constant acceleration of 2.5 m/s2 m / s 2 toward the east. Let the x x direction be eastward and the y y direction be northward, and let the skateboarder be at the origin at t=0 t = 0 .

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

The necleus of an atom is made up of what subatomic particles?

Amajor difference radio waves, visible light, and gamma rays is the of the photons, which results in different photon frequencies and wavelengths