Explain why a flame point is in the upward direction.

Explain why A has lower point than B ?

Write the coordinates of the point that lies on y-axis and is at a distance of 2 units in upward direction.

If a balloon filled with air and its mouth untied, is released with its mouth in the downward direction, it moves upwards . Why ?

Explain why,a nail has a pointed tip .

Explain why xylem transport is unidirectional and phloem transport bi-directional.

A ball is dropped from an elevator moving upward with acceleration 'a' by a boy standing in it. The acceleration of ball with respect to [Take upward direction positive]

Explain why melting point of NaCl is higher than that of AlCl_(3) .