Starting with and

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Starting with

v = u + a t

and

s = u t + \tfrac12 a t^2

, which of the following substitutions for

t

in the second relation will lead directly to

v^2 = u^2 + 2 a s

? (a)

t = \dfrac{v+u}{a}

(b)

t = \dfrac{v-u}{a}

(c)

t = \dfrac{u-v}{a}

(d)

t = \dfrac{v-u}{2a}

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