Which of the following has the greatest momentum?
a. a tortoise with a mass of 275 kg moving at a velocity of 0.55 m/s
b. a hare with a mass of 2.7 kg moving at a velocity of 7.5 m/s
c. a turtle with a mass of 91 kg moving at a velocity of 1.4 m/s
d. a roadrunner with a mass of 1.8 kg moving at a velocity of 6.7 m/s

A

Explanation:

Momentum is mass times velocity.

A. 275 kg × 0.55 m/s = 151.25 kgm/s

B. 2.7 kg × 7.5 m/s = 20.25 kgm/s

C. 91 kg × 1.4 m/s = 127.4 kgm/s

D. 1.8 kg × 6.7 m/s = 12.06 kgm/s

So A has the greatest momentum.

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

hope this : )

explanation:

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form