Question

Allen

大一普物 請問第9題要怎麼寫

區9.

10.

一
六

余
條

 

 

監工
選hor
A basketbal] player is 15 了 horizontally from the center Qf the basket, which is 10 ft off the ground. At

whatangb should the player aim the ball from aheight of8.2 ft with a Speed of 26人/s?

  

A diyer leaves a 3-m board on a trajectory that takes her 2.5 m above the board and then into the water
2.8m horizontally from the end ofthe board. At whatspeeil and angle did she leave the board?

半生

(3) Show 也at 了e position of a particle on a circle_ of radius AR With its center at the Orlgin 1S
7三[cos +sin9史, where 幻 is the angle the position vector makes with thex-axis. (b) IFthe partlcle

Inoves With constant speed y Starting on 了he x-aXis at /三0, find an expression for 9 interms oftime /
and the period 7to complete a full circle. (c) Find the magnitude and direction ofthe aeeeleration.

7  角
高.。A pasketbal player 1s 15 ft horizontally from the center 只 the basket, which 1S 10 ft otf the ground. At

whatangle should fhe player aim the ball from aheight of 8.2 ft with a speed of 26ft/S?

必9. Adiver Jleaves a 3-m board on a trajectory that takes her 2.5 m above the board and then into the water
2.8 m horizontally from the end ofthe board. At what'speed and angle did she leave the board?

sk 2