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 .