Bob releases a toy car at the top of the derby car ramp. predict the motion of the car at 6 seconds.

a) the race car decelerates as it approachs in the bottom of the ramp.

b) the car continues at a constant rate in a linear path down the ramp.

c) the derby race circuit will end before 6 seconds so the car will stop.

d) the derby car continues to accelerate as it travels in a straight line.

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

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.