Force

• Type of force

  Contact and non - contact
• Contact Force

  Friction force

  Air resistance

  Water resistance

  Upthrust
• Non-contact

  Gravity

  Magnetic force

  Electromagnetic Force
• When you go down a hill on a bicycle and the brakes need to touch the wheel so that you slow down is what type of force

  Friction Force
• When a person jumps down while skydiving and opens his parachute, he becomes slower what kind of force is that

  Air resistance
• The friction between you and the water particles. The water slows down an object that is moving through it

  Water resistance
• A leaf floating on a pond is called what force?

  Upthrust
• Force that pulls objects downwards

  Gravity
• Force that attracts things

  Static Electricity
• Force that attracks object when it is made out of metal and can also repel

  Magnetic Force
• The Force acting on a car is 4500N. The cars mass is 1500KG. What is the acceleration?

  3m/s2
• A 10kg box is pushed along a horixontal surface of 30N. What is the acceleration?

  3 m/s^2
• A 500g object is subjected to a force of 2N.What is the acceleration?

  4m/s2
• Mention 7 based quantities

  Mass

  Length

  Time

  Temperature

  Current

  Luminous intensity

  Amount of substances
• What is the unit for Mass?

  Kg
• What is the unit for length?

  Meter (m)
• What is the unit for time?

  Sec
• What is the unit for Temperature?

  Calvin (k)
• What is the unit for Current?

  Ampere (A)
• What is the unit for luminous intensity

  Candela (cd)
• What is the unit for amount of substances?

  Mole
• Mention 11 Derived quantities

  Area

  Velocity

  Acceleration

  Force

  Volume

  Energy

  Gravity

  Pressure

  Power

  Voltage

  Density
• Unit of Area:

  m2
• Unit of Velocity

  m/s
• Unit of acceleration

  m/s2
• Unit of Force

  kgm/s2
• Unit of Volume

  m3
• Unit of Gravity

  M/s2
• Unit of Energy

  joules
• Unit of density

  kg/m2
• Unit of Pressure

  N/m2

  Pascal (pa)
• Unit of power

  Waitt
• Unit of voltage

  Volt
• What is mass

  Mass is how heavy an object is
• What is weight

  weight is the force of gravity pulling on you
• What are lubricants?

  Substances used to reduce friction between surfaces. Such as oil or other grease