【单选题】A 70.0-kg man jumps 1.00 m down onto a concrete walkway. His downward motion stops in 0.0200 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?
【简答题】a. Frank is not going to the graduation ceremony because he broke his leg snowboarding last week. b. But, Frank (go) _____ to the graduation ceremony if he (break) _____ his leg snowboarding last week...