Define terminal speed. find out expression for terminal speed of a body while falling in viscous medium. hence explain why air bubbles rise up in water? (3)
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speed is the velocity at which a falling object ceases to accelerate downward .
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Terminal velocity is the maximum speed at which a particle or object will fall in a fluid, which is a balance of drag and gravity. ... A falling ball reaches terminal velocity when the acceleration due to the force of gravity is exactly compensated by the friction of the fluid on the ball.
Bubbles are comprised of gases, which have a lesser density than water. Since they are less dense, they get pushed up to the surface, and they rise, lighter than the liquid around them. This is just like helium in air; helium is lighter than air, so it rises, pushed to the top by the pressure around it.
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Bubbles are comprised of gases, which have a lesser density than water. Since they are less dense, they get pushed up to the surface, and they rise, lighter than the liquid around them. This is just like helium in air; helium is lighter than air, so it rises, pushed to the top by the pressure around it.
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