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x-0-pi-2-sinx-cosx-tg3x-

Question Number 60587 by behi83417@gmail.com last updated on 22/May/19 x[0,π2]sinx+cosx=tg3x Commented by MJS last updated on 22/May/19 triedacoupleofdifferentsubstitutions,all$$\mathrm{lead}\:\mathrm{to}\:\mathrm{a}\:\mathrm{polynome}\:\mathrm{of}\:\mathrm{degree}\:\mathrm{8}\:\mathrm{without}\:\mathrm{any} \

A-particle-starts-from-rest-at-time-t-0-and-moves-in-a-straightline-with-variable-acceleration-a-m-s-2-where-a-t-5-0-t-5-a-t-5-10-t-2-t-5-t-being-measured-in-seconds-

Question Number 126092 by physicstutes last updated on 17/Dec/20 Aparticlestartsfromrestattimet=0andmovesinastraightlinewithvariableaccelerationam/s2wherea=t5,0t5,a=t5+10t2,t5,tbeingmeasuredinseconds.Showthatthevelocityis2212m/swhent=5and11m/swhent=10.Showalsothatthedistancetravelledbytheparticle$$\mathrm{in}\:\mathrm{the}\:\mathrm{first}\:\mathrm{10}\:\mathrm{seconds}\:\mathrm{is}\:\:\left(\mathrm{43}\frac{\mathrm{1}}{\mathrm{3}}−\mathrm{10}\:\mathrm{ln}\:\mathrm{2}\right)\:\mathrm{m}. \