A ball is thrown from a point 40m from a 90m high cliff at angle 70°. at the same instant another ball is thrown from a top of cliff at 30° with 20m/s if bodies collide find speed of projection of body A​

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?

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z