A 50 kg girl is standing in a 300 kg rowboat and is at rest. If the girl steps out of the boat with a speed of 3m/s, what speed will the boat be pushed back with?

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.