‘g’ by Free Fall Ball by Unilab

The Unilab ‘g’ by Freefall Ball (g-Ball) is a fun way to measure the acceleration due to gravity and make empirical measurements to illustrate the laws of motion. The g-Ball contains an accurate timer with millisecond resolution. Timing begins when the button is released and stops when the g-Ball hits the ground. The time of flight is displayed on a clear LCD display.

Batteries: CR2032 Lithium Button Cell Batteries
Reasons to Love
Replaceable battery: CR2032 Lithium Button Cell
Learning Outcomes
Key Stage 4 Physics – Forces: Forces and fields: electrostatic, magnetic, gravity. Explain that weight is an effect of gravity which can vary with the gravitational field strength g (measured in N/kg) and recognise and predict phenomena that depend on weight and non inertial mass and distinguish between the two. Give examples of forces which act without contact across an empty space, linking these to the gravity, electric and magnetic fields involved. Estimating speeds and accelerations in everyday contexts.