A stone is thrown from the top of a building with an initial velocity of 20 m/s downward. The top of the building is 60 m above the ground. How much time elapses between the instant of release and the instant of impact with the ground?
a. 2.0 s
b. 6.1 s
c. 3.5 s
d. 1.6 s
e. 1.0 s
A
You might also like to view...
Cholesterol belongs to what class of organic compounds?
a. Alkyl halides b. Esters c. Carboxylic acids d. Alcohols
A refrigerator condenser is a heat exchanger that converts a refrigerant from a vapor to a liquid at constant pressure and approximately constant temperature. If ammonia is used as a refrigerant and 10 kg/s is condensed at 25ºC when the surrounding temperature is 20ºC, determine the heat transfer from the refrigerant using data from the Appendix Chart C-7.
What will be an ideal response?
Why was the Shoemaker-Levy 9 impact so important to astronomers?
A) It dredged up material that gave us our first direct look at Jupiter's interior composition. B) It confirmed our theory of solar system formation. C) It wiped out the dinosaurs. D) It was the first direct proof that impacts really occur. E) It was the first event in modern history that was brighter than the full moon in the sky.
A cereal box has the dimensions of 0.14 m × 0.22 m × 0.070 m. If there are 3.28 feet per meter, then what is the volume of the box in cubic feet?
a. 7.6E–2 cubic feet b. 2.3E–2 cubic feet c. 2.7E–1 cubic feet d. 3.9E–3 cubic feet e. 1.3E–2 cubic feet