Question

Show that or Prove F=ma in physics class 9th

Answer 1

$\huge\tt\underline\purple{Answer:-}$

We know momentum of an object,

P = ma,

where m = mass and v = velocity

Change of momentum , ∆P = mv – mu

where,v and u are initial velocity.

Rate of change of momentum

$\frac{m(v - u)}{t} \: ...........( i) \\ \\ Also \: we \: know \: Acceleration \: a \: = \frac{v - u}{t} \\ \\ Again \: force \: F \: = ma \\ \\ Thus \:( i)can \: be \: written \: as \: Fa = \frac{m(v - u)}{t}$

F = kma where k is constant

Hence from second law of motion we get force is product of mass and acceleration.

so, we can show that F = ma.

Answer 2

Answer:

the above answer is totally correct