Block A is placed on a rough surface inclined at an angle θ
above the horizontal. A taut string connects block A
over a pulley to block B
, which hangs from the string, as shown below. The masses of blocks A
and B
are MA
and MB
, respectively. At time t=0
, block A
is sliding up the slope as block B
falls, and the blocks are both slowing down. Assume that the mass and friction of the pulley are negligible.

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explanation:

technology is the application of the knowledge gained by science.

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.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.