Newton’s Second Law of Motion states, “The force acting on an object is equal to the mass of that object times its acceleration.” ...

Weight and mass are very different. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

Newton's Second Law of Motion says that a force on an object is equal to its mass multiplied by its acceleration (F = ma), so if that mass is a negative number, the force will also be negative.

Weight and mass are very different. Find out more with BBC Bitesize. For students between the ages of 11 and 14.