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

The force can be applied by your body weight, dumbbells, kettlebells, barbells, resistance bands, exercise machines, or several other tools. Types of Strength Training ...

Luke has a height of 5 feet 9 inches and a weight of 150 pounds (1.75 m and 68 kg). There are only two external forces on the Luke-Yoda system: the gravitational force and the force of the ground ...