The mass of Saturn is 5.67 x 10^26kg. What is the orbital speed of an ice particle that orbits Saturn at a distance of 102,000 km from the planet's center? Note: The constant of universal gravity (G) equals 6.674 x 10^-11 N • m^2/kg^2.

A. 13.8 km/s

B. 19.3 km/s

C. 27.5 km/s

D. 1.93 km/s

Taylor's experiment: 1. accurately measured the speed of light 2. locked together the phases of two light sources so that the interference pattern would not shift 3. showed that man's reaction time was much slower than the speed of light 4. showed that individual photons have wave characteristics

Why does it dangerous to jump from a moving vehicle?

Idon’t know the answer to it and am stuck.