Question

All formulas list of motion chapter class 9 a to z

Answer 1

l1. 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

therefore, a = (v-u) / t

4. three equations of motion:-

(a) v = u + at....relation between velocity and time

(b) s = ut + 1/2at square......relation between displacement and time

(c) v square = u square + 2as......relation between displacement and velocity

5. rate of change of momentum = change in momentum / time

( rate of change of momentum = mv - mu / t = m(v-u) / t = ma )

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