4. A skateboarder goes down a ramp and is measured to have Kinetic Energy of 250 J. If the skater was moving with a velocity of 6.9 m/s what is the mass of the skater?
a.
m= ??
b. V= 6.9 (lol)
C. KE= 250 J

need help calculating mass

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

it is a negative acceleration