An aeroplane is 4000 m above the Earth’s surface. A skydiver jumps from the aeroplane and falls vertically. Figure 1 shows the distance the skydiver falls during the first 12 seconds after jumping. – 6058

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1. At first, the air resistance (drag) is less than the skydiver’s weight, so they accelerate.
   As they speed up, air resistance increases.
   Eventually, the air resistance becomes equal to the weight, so the resultant force is zero.
   Now the skydiver falls at a constant speed — this is called terminal velocity.

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