A boy of a mass 40 kg climbs a wall 2 m height calculate the work done by the boy against gravity​

which statement about this sum is true? −245+2.7

in physics zero. in muscle fatigue could be high

the inner core.

good luck: )

klicker

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.