Question

obtain the first law of motion from the mathematical expression for the second law​

Answer 1

Answer:

Newton's first law states that a body stays at rest if it is at rest and moves with a constant velocity unit if a net force is applied on it. Newton's second law states that the net force applied on the body is equal to the rate of change in its momentum.

F = ma

or F = m(v-u) / t

or Ft = mv - mu

That is, when F = 0, v = u for whatever time, t is taken. This means that the object will continue moving with uniform velocity, u throughout the time, t. If u is zero than v will also be zero, i.e., object will remain at rest.

Explanation:

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Answer 2

Answer:

direct realation of force and acceleration and also explain if no external force apply there is no change in state of object

Explanation:

there is no methametical expreesion for fist law motion , this law only explain quality

second law explain quantity

F=ma if we count mass constant then,

F directly proportion to acc

greater the force larger will be acc produce in body if mass remain same or constant

force F=0

F=m(Vf _ Vi)

0=mVf _mVi

mVf =mVi

there is no change in velocity of body