What
must your car's average speed be in order to travel 280 km
in 3.2 h? explain.

Explanation:

To find the average speed of an object given it's distance covered and time taken we use the formula

where

d is the distance

t is the time taken

From the question

d = 280 km

t = 3.2 hrs

We have

We have the final answer as

Hope this helps you

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.