Physics 9702 · AS & A Level · Non-uniform motion

Non-uniform motion — practice question

A snowflake and a raindrop are suspended in still air. They begin to fall from rest at the same instant and from the same height, which is far above the ground. The snowflake and the raindrop each contain the same mass of water. Assume that neither evaporation nor melting takes place. Also assume that, at any given speed, the drag force on the snowflake is larger than the drag force on the raindrop. Which statement about the snowflake and the raindrop is correct?

  • AThe raindrop takes more time than the snowflake to reach terminal velocity.
  • BThe raindrop takes more time than the snowflake to reach the ground.
  • CThey reach the same terminal velocity.
  • DThey take the same amount of time to reach the ground.

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