An object is swung in a horizontal circle on a length of string that is 0.93 m
long. If the object goes around once in 1.18 s, what is the centripetal
acceleration?

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope

The change from a liquid to a gas or solid to a liquid is an example of a change of.. a.) chemical b.) physical c.) atomic d.) nuclear e.) phase