1. the study of the causes of motion Newton's Second Law 2. an object at rest remains at rest if no net force acts on it inertial mass 3. surrounds every object; large around large object dynamics 4. the relationship , for example gravitational force 5. 9.8 m/s2 impulse 6. the product of mass and velocity gravitational field 7. what all masses exert on other masses Newton's First Law 8. Inverse Square Law 9. acceleration is proportional to force momentum 10. the product of force and time acceleration due to gravity

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm