If a 20-kg object dropped in air has a terminal speed of 60 m/s, what was its acceleration at 30 m/s?
a. 9.80 m/s2
b. 7.35 m/s2
c. 4.90 m/s2
d. 2.45 m/s2
e. More information is needed to answer this question.
B
You might also like to view...
Vector Nature of Angular Quantities: As you are leaving a building, the door opens outward. If the hinges on the door are on your right, what is the direction of the angular velocity vector of the door as you open it?
A. up B. down C. to your left D. to your right E. forwards
At which lunar phase(s) are tides most pronounced (e.g., the highest high tides)?
A) first quarter B) new Moon C) full Moon D) both new and full Moons E) both first and third quarters
The Higgs field, if it is discovered, is expected to interact with particles in such a way as to give those particles
A) the ability to exert forces. B) electric charge. C) good looks. D) rest mass. E) physical existence.
What are the most common type of meteorite?
a. chondrites
b. chondrules
c. iron meteorites
d. carbonaceous chondrites
e. calcium-rich carbonites