Question

formulas of ncert class 9 of force and law of motion............. please answer fast

Answer 1

(1) 1st equation formula -v=u+at

(2) 2nd equation formula -s=ut+1/2at^2

(3)3rd equation formula -v^2=v^2+at

(4)momentum=mass × velocity

(5)force=mass ×acceleration

(6) acceleration =change in velocity /time take

(7)speed =distance /time

(8)velocity =displacement /time

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Answer 2

FORMULAS FOR FORCE AND LAWS OF MOTION:

1) Force = Mass * Acceleration

2) Force = Momentum/Time

3) Work = Force * Displacement

4) Momentum = Mass * Velocity

5) Acceleration = Velocity/Time

Now, the equations for laws of motion (i.e. kinematics)

$6) v=u+at$

$7) s=ut+\dfrac{1}{2} at^{2}$

$8) v^{2}=u^{2} +2as$

• "v" is final velocity, "u" is initial velocity, "a" is acceleration and "s" is the displacement and "t" is the time taken.

Additional Information:

• Displacement, acceleration, velocity are all vector quantities.
• Momentum is also a vector quantity characterised by the product of mass and velocity.
• Force is product of mass and velocity, in other words it is rate of change of momentum.