Question Number 30614 by NECx last updated on 23/Feb/18 $${Consider}\:{that}\:{two}\:{cars}\:{are}\: \\ $$$${accelerating}\:{along}\:{the}\:{same}\:{road} \\ $$$${and}\:{if}\:{the}\:{distance}\:{between}\:{them} \\ $$$${was}\:{observed}\:{to}\:{be}\:{increasing},{what} \\ $$$${deduction}\:{can}\:{you}\:{make}\:{as}\:{regards} \\ $$$${the}\:{acceleration}? \\ $$$$\left.{a}\right){it}\:{implies}\:{that}\:{the}\:{trailing}\:{car} \\ $$$${has}\:{the}\:{smaller}\:{acceleration} \\…
Question Number 30615 by Tinkutara last updated on 23/Feb/18 Answered by ajfour last updated on 23/Feb/18 $$\bar {{r}}={t}^{\mathrm{2}} \hat {{i}}+\mathrm{3}{t}^{\mathrm{2}} \hat {{j}} \\ $$$$\bar {{v}}=\:\mathrm{2}{t}\hat…
Question Number 30613 by NECx last updated on 23/Feb/18 $${A}\:{car}\:{negotiates}\:{a}\:{bend}\:{of}\:{radius} \\ $$$$\mathrm{20}{m}\:{with}\:{an}\:{acceleration}\:{of}\: \\ $$$$\mathrm{12}{m}/{s}^{\mathrm{2}} .{What}\:{is}\:{the}\:{maximum} \\ $$$${speed}\:{the}\:{car}\:{can}\:{attain}\:{without} \\ $$$${skidding}? \\ $$ Commented by NECx last…
Question Number 30612 by NECx last updated on 23/Feb/18 $${A}\:{car}\:{negotiates}\:{a}\:{bend}\:{of}\:{radius} \\ $$$$\mathrm{20}{m}\:{with}\:{an}\:{acceleration}\:{of}\: \\ $$$$\mathrm{12}{m}/{s}^{\mathrm{2}} .{What}\:{is}\:{the}\:{maximum} \\ $$$${speed}\:{the}\:{car}\:{can}\:{attain}\:{without} \\ $$$${skidding}? \\ $$ Terms of Service Privacy…
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Question Number 30331 by Tinkutara last updated on 20/Feb/18 Answered by rahul 19 last updated on 20/Feb/18 $$\left(\mathrm{3}\right)\:\mathrm{10}\:\mathrm{s}. \\ $$ Answered by ajfour last updated…
Question Number 30165 by rahul 19 last updated on 17/Feb/18 Commented by ajfour last updated on 19/Feb/18 $${let}\:{us}\:{first}\:{choose}\:{a}\:{fixed}\:{x}-{axis}. \\ $$$$\bar {\omega}\:=\:\omega\hat {{k}}\:\:\:{and}\:{at}\:{time}\:{t}\:\:\theta=\omega{t} \\ $$$$\bar {{r}}={r}\left(\mathrm{cos}\:\theta\hat…
Question Number 30129 by ajfour last updated on 16/Feb/18 Commented by ajfour last updated on 16/Feb/18 $${Determine}\:{eq}.\:{of}\:{trajectory}\:{of} \\ $$$${a}\:{solid}\:{rubber}\:{ball}\:{of}\:{radius}\:\boldsymbol{{r}},\:{until} \\ $$$${it}\:{rolls}\:{down}\:{without}\:{slipping}. \\ $$ Terms of…
Question Number 161194 by MJS_new last updated on 14/Dec/21 $$\mathbb{TAKEN}\:\mathbb{FROM}\:\mathbb{REAL}\:\mathbb{LIFE} \\ $$$$\mathrm{if}\:\mathrm{I}\:\mathrm{try}\:\mathrm{to}\:\mathrm{walk}\:\mathrm{into}\:\mathrm{a}\:\mathrm{shop}\:\mathrm{through}\:\mathrm{a}\:\mathrm{super} \\ $$$$\mathrm{clean}\:\mathrm{closed}\:\mathrm{glass}\:\mathrm{door}\:\mathrm{and}\:\mathrm{get}\:\mathrm{myself}\:\mathrm{a} \\ $$$$\mathrm{bloody}\:\mathrm{nose}\:\mathrm{then}\:\mathrm{what}'\mathrm{s}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of}\:\mathrm{the} \\ $$$$\mathrm{brake}\:\mathrm{acceleration}\:\mathrm{when}\:\mathrm{we}\:\mathrm{assume} \\ $$$$\left.\mathrm{1}\right)\:\mathrm{my}\:\mathrm{walking}\:\mathrm{speed}\:\mathrm{is}\:\mathrm{7km}/\mathrm{hr} \\ $$$$\left.\mathrm{2}\right)\:\mathrm{the}\:\mathrm{crumple}\:\mathrm{zone}\:\mathrm{of}\:\mathrm{my}\:\mathrm{nose}\:\mathrm{is}\:\mathrm{1}/\mathrm{2}'' \\ $$$$\left.\mathrm{3}\right)\:\mathrm{the}\:\mathrm{brake}\:\mathrm{acceleration}\:\mathrm{is}\:\mathrm{constant} \\…
Question Number 161163 by peter frank last updated on 13/Dec/21 Answered by nikif99 last updated on 15/Dec/21 $${n}={p}+{q}−\mathrm{2} \\ $$$$ \\ $$ Commented by nikif99…