A cyclist takes a ride lasting 25s. The diagram shows how her distance travelled from the starting position varies with time. 150 distance travelled/m 100 50 5 10 15 20 25 time / s what is her average speed for the whole ride (a) 6.0 m/s
(b) 7.5 m/s
(c) 10.0 m/s
(d) 11.0 m/s

car stops. he keeps going = he has inertia

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.