It takes about 6 sec for a stone dropped from rest at the top of a vertical mine shaft to hit the bottom of the shaft. how deep is the shaft?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?