Physics Review Question Unit: type the regents category here Year: 1993 Question#: 13 Question: A student rides a bicycle up a 30.° hill at a constant speed of 6.00 meters per second. The combined mass of the student and bicycle is 70.0 kilograms. What is the kinetic energy of the student-bicycle system during this ride? (1 ) 210. J (2 ) 420. J (3 ) 1,260 J (4 ) 2,520 J What is this question really asking? [ Return to question menu ] Answer 1 210. J INCORRECT In order to get this answer you probably started with the right formula KE = 0.5 m v2 but then forgot to square the 6.00 m/s velocity. return to top Answer 2 420. J INCORRECT To get this answer you probably just multiplied velocity times mass and forgot about actually using the formula for kinetic energy. return to top Answer 3 1,260 J CORRECT In order to get this answer you must have started with the right formula KE = 0.5 m v2 and correctly chose to ignore the agle you were given which was an unnecessary piece of indformation. return to top Answer 4 2520 J INCORRECT In order to get this answer you probably started with the right formula KE = 0.5 m v2 but then forgot to multiply by one half. return to top ·ë 4{pîW· GÙÛ+(´\ EìG¸Ç¼GvÐû5¸ðÖz©L©G¦¨é¼*¯I"¾Åµ»x¶Q 7x%`Õ½Ai ;º¥«U9¯£d¿ÝUÀúØ»ak83»¯×®26+ÌÀ.e¾zë½Ä»¾´¤9§%X»,ÆÁåÁÓ©ÂáëR Ø23<Å€”¤Åi¶ªÄ©ðÇfÇ3·y±û¢s¨š iF‰·ujÜeàj·,;ë´µ*´D¿ùt,ÇÏËvø;È’œ›†1É–|ɘœÉš¼ÉœÜÉžüÉ ÌÊ¢<ʤ\ʦ|ʨœÊª¼Ê¬ÜÊ®üÊ°ì ‹h´±\ˬl®Uk˺üÊ7v7»ËÀ\ÊÚJŸ‘<µÁ|̱§Aq(WÆYR!‚§LÃWÌÈ\Íæ—»8;LŽüpŒS> |