Types of force and their effectsIB MYP Physics: Mind map

Exam questions on Types of force and their effects

1. A student in Toronto pulls a heavy wooden box across a classroom floor using a rope. The box moves along the floor at a steady speed.
   State the name of the force between the box and the floor that opposes its motion, and the direction in which it acts.2 marks
2. A wooden cork floats at rest on the surface of the water in a pond in Kyoto.
   Describe how to draw a free-body diagram of the cork.2 marks
3. A class in Nairobi investigates how the surface affects the force needed to pull a wooden block at a steady speed. They pull the block along four surfaces using a newton meter. The readings are 3.0 N on tile, 5.5 N on carpet, 7.0 N on sandpaper and 2.0 N on glass.
   Suggest three variables that the class should keep the same to make the investigation a fair test.3 marks