On a calm day (no wind), you can run a 1500-m race at a velocity of 4.0 m/s. If you ran the same race on a day when you had a constant tailwind of 2.0 m/s, the time it would take you to finish would be
A) 250 s.
B) 9000 s.
C) 1125 s.
D) 750 s.
E) 500. s.
A
You might also like to view...
Earth's axis is tilted at an angle of _______________ degrees
Fill in the blank(s) with correct word
If the following generic atom were to undergo ionization, what would the most likely product be?
A) +1 B) -2 C) -3 D) +4 E) would probably not ionize
Bowl-shaped depression; the term comes from the Greek for bowl
A. Crater |
B. Stone meteorites |
C. Tektites |
D. Meteors |
E. Regmaglypts |
F. Meteor showers |
In principle, if we could see all the way to the cosmological horizon we could see the Big Bang taking place. However, our view is blocked for times prior to about 380,000 years after the Big Bang. Why?
A) Before that time, the universe was too crowded with stars. B) Before that time, the gas in the universe was dense and ionized and therefore did not allow light to travel freely. C) Before that time, the universe was dark so there was no light to illuminate anything. D) 380,000 years after the Big Bang marks the time when stars were first born, and thus began to shine the light by which we can see the universe.