Unbalanced Forces: o o o
Unequal forces Can be in the same or opposite direction Causes a change in motion
For example, in Tug of war, If teams 1 & 2 apply equal forces in opposite directions, there would be no net force. This is Balanced force.
However, if Team 1 exerts more force than Team 2, then there would be a net movement towards Team 1 and Team 1 would win. This is unbalanced force.
Momentum
Newton’ s first law was for scenarios where net force = 0. The second law is for scenarios with net force not equal to 0. Momentum plays a crucial role in Second law.
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Momentum is the product of mass of a body & its velocity It is a Vector quantity It is denoted by p = mv
For example, A ball of 1 kg moving with 10m / sec has a momentum 10kg m / sec.