8. Why was less water lost (on average) when the bottle fell for about 1 second than when it remained motionless for 1 second? aThe water becomes weightless as it falls.bThe bottle and the water are both attracted to Earth by gravity at the same rate.cThe water does not fall as quickly as the bottle because the bottle encounters more air resistance.dThe gravitational force on the water is more than the force on the bottle because the water has more mass than the bottle.

. Which of the following is the BEST interpretation of the differences between the bottle being dropped and the water being released while the bottle was held still? aThe water will always move downward out of the bottle.bThe water will fall at different rates depending on how the bottle does or does not fall.cWhen the bottle is motionless, gravity will attract the water downward out of the bottle.dThe water will squirt out sideways because of the pressure of water farther up in the bottle.

9. If the bottle were left open (with no cap) and additional force were applied to the bottle—such as someone pulling it downward as it fell—what would you expect to see happen? aThe water would stay in the bottle.bThe water would come out of the top of the bottle.cThe water would come out of the holes in the bottle sideways.dThe water would come out of the holes in the bottle and fall downward.

A drop of water of radius 0.0015 mm is falling in air. If the coefficient of viscosity of air is 2 × 10–5 kgm–1 s–1, the terminal velocity of the drop will be :- (The density of the water = 103 kgm–3 and g = 10 ms–2

As you collect plastic bottles for recycling, one of the bottles rolls horizontally off the kitchen counter and bounces on the floor about 1 foot (0.3 meters) outward from the base of the counter. Why didn't the bottle drop straight down and hit the floor exactly at the base of the counter?1 pointThe bottle coasted horizontally outward as it fell vertically.The counter pushed the bottle horizontally outward as the bottle fell vertically.The bottle pushed itself horizontally outward as it fell vertically.The direction of the net force on the falling bottle was at an angle between outward and downward, so the bottle moved outward and downward.

The number of water molecules present in a drop of water weighing 0.9 g is