A block of mass M is sliding with an initial speed v I along a horizontal surface with negligible friction. A constant force of magnitude F A F A is exerted on the object at an upward angle of 60o from the horizontal, causing the object to speed up. If the block remains in contact with the floor, what is the change in the block’s kinetic energy as it moves a horizontal distance Δ x Δx?

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

god i 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.