Which statement is true about present day Earth? It is in the Precambrian time span.

It is in the Cambrian time span.

It is in the Cenozoic Era.

It is in the Mesozoic Era.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

*30 points + brainliest answer* 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

An olympic runner leaps over a hurdle. the acceleration of gravity is 9.81 m/s2 . if the runner’s initial vertical speed is 2.0 m/s, how much will the runner’s center of mass be raised during the jump?