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14 Dec 2017
5.21 .. CP BIO Force During a Jump. When jumping straight up from a crouched position, an average person can reach a max- imum height of about 60 cm. During the jump, the person's body from the knees up typically rises a distance of around 50 cm. To keep the calculations simple and yet get a reasonable result, assume that the entire body rises this much during the jump. (a) With what initial speed does the person leave the ground to reach a height of 60 cm? (b) Draw a free-body diagram of the per- son during the jump. (c) In terms of this jumper's weight w, what force does the ground exert on him or her during the jump?
5.21 .. CP BIO Force During a Jump. When jumping straight up from a crouched position, an average person can reach a max- imum height of about 60 cm. During the jump, the person's body from the knees up typically rises a distance of around 50 cm. To keep the calculations simple and yet get a reasonable result, assume that the entire body rises this much during the jump. (a) With what initial speed does the person leave the ground to reach a height of 60 cm? (b) Draw a free-body diagram of the per- son during the jump. (c) In terms of this jumper's weight w, what force does the ground exert on him or her during the jump?
Tod ThielLv2
17 Dec 2017
