Question

all the formulae from class 9 chapter force and laws of motion

Answer 1

Answer:

1. speed = total distance travelled / time required.
2. velocity = displacement / time.
3. (a) acceleration = change in velocity / time. (b) acceleration = a = final velocity - initial velocity / time. ...
4. three equations of motion:- ...
5. rate of change of momentum = change in momentum / time.

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Answer 2

Answer:

v = velocity

s=displacement

t= time

t= timea = acceleration v =final velocity

final velocityu= initial velocity

final velocityu= initial velocityt=time

Average speed = total distance / total time

Velocity= v = s/t

Acceleration = a= v-u/t

Momentum = p= m×t

Principle of Conservation of Momentum = m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

Three Equations of Motion are v = u + at;

s = ut + (1/2) at²

v ^ 2 = u ^ 2 + 2as

Explanation:

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