State the relation between the kinetic energy and momentum ?
Answers
There is a relation between kinetic energy and momentum as both the properties are linked with velocity. Momentum gets expressed as a multiplication of velocity and mass, whereas kinetic energy is the product of the square of speed and half of the mass.
Explanation:
Relation Between Momentum and Kinetic Energy
Kinetic energy and momentum of a moving body can be mathematically related as follows-
Consider the formula of kinetic energy-
K.E=12mv2
Multiply and divide R.H.S by m
⇒K.E=12mv2×mm =m2v22m =(mv)22m
We know that p=mv. Substituting for mv in the above equation we get-
K.E=p22m
The above equation gives the relation between Kinetic energy and momentum of the object which is under motion.
If the Momentum(p) is constant K.E∝1m
If Kinetic Energy(K.E) is constant p∝m−−√
If mass(m) is constant p∝K.E−−−−√