) An object travels 20 m in 4 s heading south. What is its' velocity? ating very wed and is as velocity as to the change in 3 What is the expects relation

Can anybody me with this? ? (picture included.)

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?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?