A 2 x 103kg car travels at a constant speed of 12 m/s around a circular curve of radius 30 m. What is the magnitude of the
centripetal acceleration in m/sof the car as it goes around the
curve?
a 0.4
b 3. 800
C 4.8
d 9600

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

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.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.