a special airport truck is used to push a heavy airliner away from the terminal. the truck pushes with a force of 2000 lb for a distance of 150 ft. the mechanical work done by the truck is ______. (circle the best answer)
a. 30,000 ft(lb)
b. 300,000 ft/lb
c. 300,000 ft(lb)
d. 30,000 ft/lb
2006-10-31 06:23:46 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Work = force * distance
Work = 2000 * 150
Work = 300,000 ft(lb)
2006-10-31 06:29:51 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
(c) is best because 150 x 2000 is closest to 300, 000 and it has to be in ft(lb). Wd = F x d
However, why do they use lb instead of Newtons?
2006-10-31 14:28:12 · answer #2 · answered by Carrot, the Peanut 1 · 0⤊ 0⤋
Work = force x distance. I don't like any of the units, however. There should be a "ft-lb force" there . . .
2006-10-31 14:40:55 · answer #3 · answered by JJ 7 · 0⤊ 0⤋
C
2006-10-31 14:31:53 · answer #4 · answered by † Ville & Bam♥ 2 · 0⤊ 0⤋