AIR RESISTANCE AND TERMINAL VELOCITY

2 marks · Normal

State two factors that affect the size of the air resistance acting on a moving object.

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1. The speed of the object; 2. The shape of the object (or its drag coefficient).

Also accept: Size of the object; Surface area

Common mistakes: Mentioning mass instead of speed or shape

Show mark scheme and worked solution

Marking points

B1 · 1 mark · Correctly states speed as one factor.

B2 · 1 mark · Correctly states shape (or drag coefficient/surface area) as the other factor.

Worked solution

1. The speed of the object. 2. The shape of the object (or its drag coefficient or surface area).