CAIE IGCSE Physics 1.5.1.8 Friction (drag) acts on an object
Practise explaining air resistance in moving vehicles and falling objects, including how speed, shape and drag affect acceleration.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- explain why acceleration changes when a constant driving force meets increasing air resistance
- use streamlined shape or smaller frontal area to justify reduced drag at high speed
- compare braking at high and low speeds by linking lower speed to less air resistance
1.5.1.8—Friction (drag) acts on an object question 1
Fig. 3.1 shows an archer aiming an arrow at a target.
Fig. 3.1
The archer releases the bow string. All the energy in (a) is transferred to the arrow.
The arrow moves off at an initial speed v. The mass of the arrow is 0.030 kg.
Explain why the speed of the arrow as it hits the target is less than the value in (b)(i).
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