Newton's Second Law states that force equals mass times acceleration. This can be investigated using a set-up like this one. You can use this set-up to investigate how changing two separate factors, ...

There are various methods to measure acceleration due to gravity. At Higher level all rely on one of the equations of motion. The measurements required will depend on the equation used. Watch this ...

A new study has attempted to pin down the properties of interstellar comet 3I/Atlas, finding it is "anomalously massive" at around 33 billion tons.