physics corsework

• the size of the change in momentum of an object depends upon two things
• the size of the force applied
• the time the force is applied for
• change in momentum= force x time

                   (kgm/s)          (N)      (S)

• in a car accident the passanger can expierance large force which injures them. the sudden change in momentum causes theese large forces. such as...
• air bags
• seatbelts
• crumbel zones
• helemets

forces a moving objest

• air resistance
• gravity
• upthrust
• thrust