 # Secondary 3 Physics (O-level) Tuition Lesson

### Deriving From Velocity Time Graph (Kinematics)

In this video, our Sec 3 Physics PMC tutor breaks down the way to derive acceleration, displacement and average speed from velocity time graphs. Velocity-time graphs are used to describe the motion of objects which are moving in a straight line. Through the data, we are able to calculate as any acceleration, change in speed, change in time and distance travelled.

### Angle of Incidence in Prisms

An angle of incidence is the angle which an incident line or ray makes with a perpendicular to the surface at the point of incidence. This concept is thoroughly explained in the video of our Sec 3 Physics PMC tutor as she describes the pathway of light as it passes through a prism.

### Understanding Wave Motion: Displacement Time Graph

In this video, our Sec 3 Physics PMC tutor walks us through understanding the displacement of waves in a displacement-time graph. The gradient of displacement-time graphs at a particular time shows us the velocity of the object.

### Thermometric Properties Calculations In Thermodynamics

A thermometric property is the physical property of a thermometer that changes measurably with temperature. The video follows our Sec 3 Physics PMC tutor’s explanations of various calculations in relation to this topic.