Aball, initially at rest, rolls down a ramp. it experiences an acceleration of 1.2
m/s2 if it is rolls a distance of 1.8 m, how fast is it traveling?

Which feature of a heating curve indicates a change ofn state

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

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