ClickerCentral

Formative assessment questions for teaching physics

A2L Item 272

  • Description:
  • Goal:
  • Source:
  • Keywords: Velocity, Problem Solving, Mechanics, Gravity, Forces, Dynamics, Displacement, Acceleration

The question for students:

Jane is riding in a hot air balloon that is rising vertically at a constant speed of 3 m/s over a lake. She drops a rock from the balloon when the distance from the rock to the water is 50 m. Use g=10 m/s2, and let up be the positive direction. Assume the origin is on the surface of the water, what is the initial position of the rock?

  1. 0
  2. 50 m
  3. -50 m
  4. None of the above.

Commentary for teachers:

No commentary available.