CAIE IGCSE Physics Speed and Velocity
Practise distinguishing speed from velocity and deciding whether velocity is uniform when an object reverses, follows a bend or moves in a circle at constant speed.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- state that velocity includes direction whereas speed gives magnitude only
- identify uniform velocity only when both speed and direction remain constant on a straight path
- explain that velocity changes around a bend because direction changes even when speed is constant
1.2.2—Velocity as speed in a given direction question 1
Fig. 2.1 shows a motorcyclist accelerating along a straight horizontal section of track.
Fig. 2.1
The motorcyclist and motorcycle have a combined mass of 240 kg .
At the end of the straight section, the track remains horizontal but bends to the right, as shown in Fig. 2.1.
When the motorcyclist reaches the bend, she travels around the bend in a circular path at a constant speed.
Describe what happens to the velocity of the motorcyclist as she travels around the bend at constant speed.
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