MOMENTUM (1)

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Momentum- COLLISIONS

momentum has a SIZE and DIRECTION

MOMENTUM IS ALWAYS CONSERVED (stays the same) PROVIDED THERE ARE NO EXTERNAL FORCES APPLIED.

Momentum is basically mass in MOTION.

MOMENTUM of MOVING OBJECT (Kg m/s) = MASS (kg) x VELOCITY (m/s)

P= M x V

where:

P= Kg, metres/second

M= mass in Kg

V= speed in m/s

eg calculate the momentum of a sprinter of mass 50Kg running at a velocity of 10m/s.

  • mass= 50kg
  • velocity= 10m/s
  • = 50 x 10= 500 Kg m/s.

LAW OF CONSERVATION OF MOMENTUM:

In a closed system:

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