Question

16. (10pts) Consider the following situations: a car slowing down at a stop signメdeacce Let a ball being swung in a circle at constant speed a レa vibrating string accelera on つ, the Moon orbiting the Earth a- /V-Cons+ a skydiver falling at terminal speed acceteranas an astronaut in an orbiting space station zleaccee ball rolling down a hill-D acceter- a person driving down a straight section of highway at constant speed with her foot on the accelerator

Answer 1

A car slowing down at a stop rightarrow decelerating rightarrow A ball bong swung in a circle at const speed rightarrow acceleration (a = v^2/R) rightarrow A vibrating string rightarrow both accelerating as will a deceleration rightarrow moon orbiting earth rightarrow accelerating (centripetal accen) rightarrow skydiver falling at terminal speed rightarrow a = 0, v = const rightarrow Astronaut in an orbiting space station rightarrow accelerating (centripetal accen) rightarrow A ball rolling down a hill rightarrow accelerating rightarrow A person driving down a straight section of highway at constant speed with her foot on the accelerator rightarrow a = 0 rightarrow A molecule in the floor of this of the room rightarrow a = 0, v = const