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Question Number 14297 by Tinkutara last updated on 30/May/17

$$\mathrm{Select}\mathrm{the}\mathrm{correct}\mathrm{formulae}\mathrm{for}$$$$\mathrm{uniformly}\mathrm{accelerated}\mathrm{motion}\mathrm{along}\mathrm{a}$$$$\mathrm{straight}\mathrm{line}(\mathrm{More}\mathrm{than}\mathrm{one}\mathrm{option}$$$$\mathrm{are}\mathrm{correct})$$$$\left(1\right)v=u+at$$$$\left(2\right)s=\left(\frac{u+v}{2}\right)t$$$$\left(3\right)s=vt-\frac{1}{2}{at}^2$$$$\left(4\right)s=\frac{v^2-u^2}{2a}$$

Commented by Tinkutara last updated on 30/May/17

$$\mathrm{Thanks}\mathrm{Sir}!$$

Commented by tawa tawa last updated on 30/May/17

$$\mathrm{The}\mathrm{question}\mathrm{means},\mathrm{which}\mathrm{of}\mathrm{the}\mathrm{following}\mathrm{is}\mathrm{not}\mathrm{correct}.$$

Commented by tawa tawa last updated on 30/May/17

$$\mathrm{It}\mathrm{should}\mathrm{be}\mathrm{which}\mathrm{one}\mathrm{is}\mathrm{In}\mathrm{correct}\mathrm{for}\mathrm{a}\mathrm{uniformely}\mathrm{accelerated}\mathrm{motion}$$$$\mathrm{in}\mathrm{a}\mathrm{straight}\mathrm{line}.$$

Commented by tawa tawa last updated on 30/May/17

$$\mathrm{So}\mathrm{if}\mathrm{more}\mathrm{than}\mathrm{one}\mathrm{option}\mathrm{is}\mathrm{correct}.$$$$\mathrm{All}\mathrm{other}\mathrm{answer}\mathrm{is}\mathrm{correct}\mathrm{except}\mathrm{for}3$$

Commented by tawa tawa last updated on 30/May/17

$$1,2,4\mathrm{are}\mathrm{correct}.$$

Commented by Tinkutara last updated on 30/May/17

$$\mathrm{But}\mathrm{answer}\mathrm{given}\mathrm{is}\mathrm{all}\mathrm{are}\mathrm{correct}.\mathrm{How}?$$

Commented by tawa tawa last updated on 30/May/17

$$\mathrm{it}\mathrm{maybe}\mathrm{typing}\mathrm{error}.\mathrm{s}=\mathrm{ut}+\frac{1}{2}{\mathrm{at}}^2$$

Commented by prakash jain last updated on 30/May/17

$$v=u+at$$$$s=vt-\frac{1}{2}{at}^2=(u+at)t-\frac{1}{2}{at}^2$$$$=ut+\frac{1}{2}{at}^2$$$$\left(3\right)\mathrm{is}\mathrm{also}\mathrm{correct}$$

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