8. how does inertia act on an object that is moving in a circle? a. it causes the object to speed up as it moves. b. it causes the object to move along a straight path. c. it directs the object toward the center of the curve.

 its D

Explanation:

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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.