If the net force acting on an object doubles, then the ________ doubles as well.
A. velocity
B. speed
C. acceleration
D. mass
Answer: C
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How large a net force is required to accelerate a 1600-kg SUV from rest to a speed of 25 m/s in a distance of 200 m?
A) 1600 N B) 0 N C) 200 N D) 400 N E) 2500 N
The electrical force on a 2-C charge is 60 N. The electric field where the charge is located is
A) 20 N/C. B) 30 N/C. C) 60 N/C. D) 120 N/C. E) 240 N/C.
Why is Mars' surface red?
a) because little green men painted it that way b) because its surface is mostly made of lava ejected from its giant volcanos c) because there is more ammonia than methane on the surface of Mars, unlike on the Jovianplanets Uranus and Neptune d) because the soil is iron rich and the iron reacted with oxygen in the early atmosphereto make rust e) because the carbon dioxide rain strikes the surface and reacts
There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of
A) a large auditorium. B) a large city. C) the United States. D) the whole world. E) none of the above