Question

Question 2. A 60 kg person bends his knees and then jumps straight up. his feet leave the floor, his motion is unaffected by air resistance and his cent of mass rises by a maximum of 15.0 cm. Model the floor as completely solid motionless. (18 points) a. Does the floor impart impulse to the person? b. Does the floor do work on the person? C. With what momentum does the person leave the floor? d. Does it make sense to say that this momentum came from the e. With what kinetic energy does the person leave the floor? Does it make sense to say that this energy come from the floor? Explain.

Answer 1

o@so)?! Ma bokg halsom = 15*10-2m A Does the floor import impuse to the person? yes 6 Doy the floor of work on the person > yes, since the floor expode a force along the Distance, he Jump, . o for Energy conserration » KE = mgh Ź mv2= with = v=1294 at h= 15818-2 m &v=0 so v=1209-81 * 15910 2 = 1072 mes Momenteny (P) = mv = (60~1.72) = 102.88 Hy Mys » Kinefine energy day leave the floor KE = £mv² = 2600(1972) = 188.757] ♡ tres Scanned CamScanner