英文物理题 求解答,非常感谢Santonio Holmes, a NY Jets wide receiver, starts on the hash mark on the right side of the field. When the ball is snapped, he runs 10 yards directly towards the goal and then runs a slant at an angle of 60 degre
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英文物理题 求解答,非常感谢Santonio Holmes, a NY Jets wide receiver, starts on the hash mark on the right side of the field. When the ball is snapped, he runs 10 yards directly towards the goal and then runs a slant at an angle of 60 degre
英文物理题 求解答,非常感谢
Santonio Holmes, a NY Jets wide receiver, starts on the hash mark on the right side of the field. When the ball is snapped, he runs 10 yards directly towards the goal and then runs a slant at an angle of 60 degrees with respect to the hash marks (i.e. 30 degrees with respect to the yard lines) towards the right sideline, where he makes a spectacular one-handed diving catch of the ball thrown by rookie QB Geno Smith. What is Santonio's displacement from the starting point when he makes his catch right at the sideline? (The hash marks are 70 feet, 9 inches from the sidelines.)
英文物理题 求解答,非常感谢Santonio Holmes, a NY Jets wide receiver, starts on the hash mark on the right side of the field. When the ball is snapped, he runs 10 yards directly towards the goal and then runs a slant at an angle of 60 degre
Solve：
AC = 70.75 （feet）= OD；
CD = AO = 10 （yard）= 30 （feet）
BC = AC× ctg∠ABC = 70.75 × ctg60° = 40.85 (feet)
thus BO = (OD^2 + BD^2)^0.5 = (70.75^2 + 70.85^2)^0.5 = 100.13 (feet)
有什么不明白的可以接着问.手绘手打,
局部放大图--------------------------------------------------- 我英语水平太次，看不太懂，是不是这个意思啊： 他从A点出发，朝对方球门处跑，跑了10码（30feet），到达B点； 然后转向，朝C点跑，跑到C点后，接到球。 问此人从A到C的位移？
