The length of a rectangle is four times its width. the perimeter of the rectangle is at most 130 cm. which inequality models the relationship between the width and the perimeter of the rectangle? 2w+2⋅(4w)> 130 2w+2⋅(4w)≥130 2w+2⋅(4w)≤130 2w+2⋅(4w)< 130

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Who was the first scientist to measure speed as distance over time?