Question

assignment for Newton laws

Answer 1

1)Newton's first law states that every object will remain in the state of rest or in uniform motion unless an external force is applied to it.
v=u+at
2)Newton's second law explains how the acceleration increases when an object is subjected to external force i.e the rate of change of momentum is directly proportional to the force applied in that direction.
•rate of change of change of momentum= mv-mu/T i.e m(v-u)/T.............(I)
let's derive the equation of acceleration i.e v-u/T
•Lets substitute the equation of acceleration in equation (I) we get,
m{v-u/T} i.e ma
we know rate of change of momentum is directly proportional to the force applied so. F=ma
3) Newton's third law states that for every action (force) in nature, there is an equal and opposite reaction.
•v²=u+2as