If an object travels 10 m north, 20 meters south, and 10 meters north what's its distance and displacement

the rearrangement of particles in a physical change. hope this

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.