how much power is needed to lift a 2kg package from the floor to a table 1.2 meters off the ground in 1 second?

Given mass = 2kg, height = 1.2m,g = 9.8.

We know that Work done W = FD

= > W = (mg)(D)

= > W = (2 * 9.8)(1.2)

= > W = 23.52 Joules.

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.