How can scientists test their ideas about the origin of the universe if they cant physically interact with or study it

when the velocity of a mass on a spring is zero, the acceleration is at a maximum .

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

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.