An apartment with ten floors has a water supply design as shown in the figure. If three people on the 1st, 5th and 10th floors open their taps at the same time, where will the pressure be the maximum?

Four school bags of the same size and dimensions but with different strap sizes are available. Among these, the strap offering the most comfort while carrying the bag would be __________________.

Four students saw a stone and a bunch of feathers being dropped from the same height at the same instant. The stone landed on the ground much before the feathers did. The person who conducted the experiment asked them as to the reason why the stone fell first.

The reasons given were as follows:

Nitya: The stone falls faster as a heavier object always falls faster than a lighter one.

Kenneth: The stone falls faster as there is no force acting on it.

Priya: The feathesr falls more slowly as it has less gravitation force acting on it.

Ruchira: The feathers falls more slowly as there is more air resistance acting on it.

Which of them is correct?

Observe the figures given below carefully.

Volume of water in each vessel is shown above. The order of the vessels in decreasing pressure at the base of each vessel is

Explain why water comes out more slowly from an upstairs tap than from a similar tap downstairs. 

Water from upstairs tap

Water from downstairs tap                                                                                                           

Sachin is an archer. He shoots an arrow in the air horizontally. However, after moving some distance, the arrow falls to the ground. Name the initial force that sets the arrow in motion. Explain why the arrow ultimately falls down.

Two rods A and B, having same weight and equal length have different thickness. Rod A is thinner while Rod B is thicker. They are held vertically on the surface of sand. Which one of them will sink more? Why?