Which graph best represents the velocity-time motion of a raindrop falling through air? Image
Options

Question

Which graph best represents the velocity-time motion of a raindrop falling through air? Image

G1 Physics · Accepted Answer

Step 1: Use surface-energy/pressure relations: ΔP = 2T/R for a liquid drop or 4T/R for a soap bubble, capillary rise h = 2T cosθ/(ρgr), and surface energy = TΔA. Step 2: Apply force or energy balance to the stated radii and surface areas. Applying these relations to the given data gives C: Image 3. Final answer: C.