Bode made a rocket using an empty plastic bottle and fins made out of cardboard. After partially filling the bottle with water, he pumps air into the bottle using a pump attached to the rocket with plastic tubes. When the pressure in the bottle becomes high enough, the water gushes out and launches the rocket into the air, as shown in the diagram below.Image modified courtesy of NASAHow does the force that causes the water to leave the rocket compare to the force that causes the rocket to launch? A. They are unequal and act in the same direction. B. They are equal and act in the same direction. C. They are equal and act in opposite directions. D. They are unequal and act in opposite directions.

Mr. Walters is launching a toy rocket.The rocket experiences a force that pushes it up into the air. Which of the following statements is true? A. The exhaust gases of the rocket are shot downward with an equal force. B. The rocket has no mass, so it does not accelerate. C. The rocket exerts an upward force on its fuel. D. The air does not experience any force as the rocket passes through it.

Take three empty plastic bottles of half litre, one litre and two litre volume. Make sure the bottlesare tightly closed and there is no leakage in bottles. Now take a bucket filled with water. Markthe level of water inside the bucket by a pen or sketch.Now fully immerse each of the three bottles one by one in the bucket and observe for each case,1. Which bottle experienced the maximum force when immersed fully in water?

A pressure-pump has a horizontal tube of cross-sectional area 10 cm2 for the outflow of water at a speed of 20m/s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is: [given: density of water = 1000kg/m3]

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.

. 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.