A toy airplane flies clockwise at a constant speed in a horizontal circle of radius 8.0 meters. The magnitude of the acceleration of the airplane is 45 meters per second squared. The diagram shows the path of the airplane as it travels around the circle. Calculate the speed of the airplane.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

there are no contact forces mentioned on the list of choices that you've provided.

i would say