WILL MARK BRAINLIEST!! What would the period of a 20.4 meter radius ferris wheel need to make for the passengers to feel “weightless” at the topmost point?

A6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400kg moving at -3.0m/s. what is their final velocity? +0.50 m/s -1.0 m/s +2.5 m/s -0.25 m/s

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?