Can you devise a method for accurately nothing changes in the position of the moon at a set time on successive? Something like using a fixed sighting point, a meter stick, protractor etc can be useful . Describe your technique.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?