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2. Because it has gravity and gravity pulls it to the earth.
3. Because of the chemicals it has in it.
4. a. by running with it
    b. by pulling it.
    c. by turning it.
    d. by truning it.

SJ2006

2) Due to friction

3) Because the forces by which bulb is hanged is much greater then the gravity

4) a) By pushing the trolley with more force

    b) By pulling the trolley with that force

    c) By creating the rightward force more, than the leftone

    d) opposite as 4(c)

5) a) Force by the stick causes that

    b) It is because white body has transferred it's K.E. into that

    c) Because it's rightward force was greater in magnitude than that of left

    d) Because white ball hit black ball in that direction