P1.06 Mass, Weight
and Gravity
, Mass
• Mass is defined as:
• A measure of the quantity of matter in an object
• Consequently, mass is the property of an object that resists change in motion
• The greater the mass of an object, the more difficult it is to speed it up, slow it
down, or change its direction
• Mass is a scalar quantity that has magnitude but no direction
• Mass is measured in kilograms (kg)
• Sometimes mass may be given in grams (g) but this will need to be converted to
kilograms when used in calculations
• 1000 g = 1 kg
• 1 g = 0.001 kg
and Gravity
, Mass
• Mass is defined as:
• A measure of the quantity of matter in an object
• Consequently, mass is the property of an object that resists change in motion
• The greater the mass of an object, the more difficult it is to speed it up, slow it
down, or change its direction
• Mass is a scalar quantity that has magnitude but no direction
• Mass is measured in kilograms (kg)
• Sometimes mass may be given in grams (g) but this will need to be converted to
kilograms when used in calculations
• 1000 g = 1 kg
• 1 g = 0.001 kg
