Quantities and units Flashcards
What is the unit and symbol for mass?
Kilogram (Kg)
What is the unit and symbol for length/displacement?
Metre (m)
What is the unit and symbol for time?
Seconds (s)
What is the unit and symbol for speed/velocity?
metres per second ( ms^-1)
What is the unit and symbol for acceleration?
Metres per second per second (ms^-2)
What is the unit and symbol for weight/force?
Newton (N)
What is weight?
The gravitational force of an object that acts vertically downwards
What is normal reaction?
The force which acts perpendicular to a surface when an object is in contact with a surface.
What is friction?
The force which opposes the motion between two rough surfaces.
What is tension?
Experienced when an object is pulled along by a string, the force acting on the object is called the tension in the string.
What is thrust/compression?
Experience when an object is being pushed along using a light rod.
What is buoyancy?
The upward force on a body that allows it to float when in water.
What is air resistance?
It opposes motion.
What is 1km in metres?
1000m
What is 1 kg in grams?
1000g
