Terminal Velocity

Question 1

Friction

Answer 1

A force that opposes the movement between 2 surfaces in contact.

Question 2

What are the 2 types of friction

Answer 2

• contact friction
• fluid friction / drag

Question 3

contact friction

Answer 3

occurs between solid surfaces

Question 4

fluid friction / drag

Answer 4

occurs between a solid object and a fluid

Question 5

4 Characteristics of drag

Answer 5

• increases as the object’s speed
  increases
• affected by the thickness of fluid
• affected by the shape and size of
  object
• drag cannot cause object to start
  moving or increase its speed

Question 6

Terminal velocity

Answer 6

When object’s driving force and its opposing drag force balance each other out, resulting in constant speed.

Question 7

3 stages of terminal velocity

Answer 7

1. object accelerates from standstill
   due to constant driving force
2. as object speeds up, drag force
   increases, slowing down the
   acceleration
3. driving force and drag force
   becomes equal, leading to a
   constant speed