a skier is moving 8.33 m/s when he starts to slide up a 8.44 frictionless slope. how much time does it take him to come to a stop

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

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.