GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Speed, Density & Pressure - Explained

The video tutorial explains a physics problem involving pressure calculation. Initially, a force of 70 newtons is applied over an area of 20 cm². The force and area are both increased by 10 units, and the new pressure is calculated. The tutorial evaluates Helen's claim that the pressure decreases by less than 20%. By calculating the initial and new pressures, the tutorial demonstrates that the pressure decreases by more than 20%, proving Helen incorrect. The video also outlines the marks distribution for solving the problem.

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