A 30-kg girl and a 25-kg boy face each other on friction-free roller blades. The girl pushes the boy, who moves away at a speed of 1.0 m/s. The girl's speed is
A) 0.45 m/s.
B) 0.55 m/s.
C) 0.83 m/s.
D) 1.2 m/s.
C
You might also like to view...
If you were to accidentally flush your cell phone down the toilet, it would be removed during what stage of the sewage treatment process?
A) Primary treatment B) Secondary treatment C) Tertiary treatment D) It would not be removed during treatment, which is why one should not flush it down the toilet.
Condensation nuclei over the ocean consist primarily of
A) pieces of coral. B) minute fragments of sea shells. C) salt particles. D) clay particles.
On a warm summer day, one city experienced a daily range of 22°C (40°F), while another had a daily range of 10°C (18°F). One of these cities is located in New Jersey and the other in New Mexico. The highest daily range probably occurred in ____________________ where relatively dry summer air allows for large daily temperature ranges. The lowest daily range more than likely occurred in
____________________ where the humid summer air keeps the daily temperature range small. Fill in the blank with correct word.
A fog that develops when warm, moist air blows over a cold surface (such as the California Current) is an example of ________ fog
A) radiation B) convection C) evaporation D) upslope E) advection