Question

- - - © Brooks/Cole, Cengage Learning

An archer lines up an arrow on the horizontal exactly dead center on a target as drawn. She releases the arrow and it strikes the target a distance h = 9.5 cm below the center. If the target is 13 m from the archer

(a) how long was the arrow in the air before striking the target.

(b) What was the initial velocity of the arrow as it left the bow? Report your answers in meters per second, feet per second and miles per hour. Neglect air resistance.

i. In meters per second

ii. In feet per second

iii. In miles per hour

Answer 1

Sy = 9.5 cm = 9.5 x 10-2 Sy = Uyt + + get² 9.5 x162 - x 9.8 +2 It= 1.39x10- see D ux = larion UX = 93.52 mis Ux - 306.82 ft/sec Ux = 4.78*10-3 mile/ur I. imis 0.447 mer - 1 mis. - 0-3848 ft/sec