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Question Number 121123 by Study last updated on 05/Nov/20

$$twocarsmovingatspeedof10\frac{m}{sec}and$$$$16\frac{m}{sec}onaroadwithalengthof200m$$$$againsteachothersohowlongwill$$$$ittakethemtoreacheachother?$$

Answered by MJS_new last updated on 05/Nov/20

$$\mathrm{the}2\mathrm{speeds}\mathrm{add}\mathrm{up}.$$$$\frac{200m}{26\frac{m}{s}}=\frac{100}{13}s$$

Commented by Study last updated on 05/Nov/20

$$why?add$$

Commented by MJS_new last updated on 05/Nov/20

$$\mathrm{if}\mathrm{I}\mathrm{take}1\mathrm{step}\mathrm{in}\mathrm{your}\mathrm{direction}\mathrm{and}\mathrm{at}\mathrm{the}$$$$\mathrm{same}\mathrm{time}\mathrm{you}\mathrm{take}\mathrm{one}\mathrm{step}\mathrm{in}\mathrm{my}\mathrm{direction}$$$$\mathrm{then}\mathrm{how}\mathrm{many}\mathrm{steps}\mathrm{are}\mathrm{we}\mathrm{closer}\mathrm{than}$$$$\mathrm{before}?$$

Commented by Study last updated on 05/Nov/20

$$ishasaformolla?$$

Commented by MJS_new last updated on 05/Nov/20

$$\mathrm{you}\mathrm{need}\mathrm{no}\mathrm{formula}.\mathrm{obviously}\mathrm{if}\mathrm{the}\mathrm{first}$$$$\mathrm{car}\mathrm{drives}\mathrm{with}\mathrm{speed}{v}_1\mathrm{and}\mathrm{the}\mathrm{second}\mathrm{car}$$$$\mathrm{with}\mathrm{speed}{v}_2\mathrm{then}\mathrm{they}\mathrm{approach}\mathrm{each}\mathrm{other}$$$$\mathrm{with}\mathrm{speed}{v}_1+v_2$$

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