A bike accelerates from 0 m/s to 15 m/s over the span of 5 seconds. How fast is the bike traveling after 2.5 seconds?

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?