What the use of physics in our life​

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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?