A box slides down a frictionless plane inclined at an angle ? above the horizontal. The gravitational force on the box is directed
A) parallel to the plane in t
he same direction as the movement of the box.
B) parallel to the plane in the opposite direction as the movement of the box.
C) perpendicular to the plane.
D) vertically.
E) at an angle ? below the inclined plane.
D
You might also like to view...
The substance that comes from a nuclear reactor which is used to generate power is
A. graphite. B. radioactive materials. C. enriched uranium. D. high-pressure steam.
Which best describes Mercury's plains?
a. heavily impacted with craters and large rays b. solidified lava flows that are a uniform gray color c. a geologically active surface of molten lava d. solidified lava flows rich in dark basalts e. a rich layer of soil containing iron and silicate
The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is
a. 31.3 m. b. 3.13 m. c. 0.313 m. d. 0.0313 m. e. none of the above.
Light strikes a diamond (n = 2.42) at an angle of 60° relative to the normal to the surface. What is the angle of refraction?
a. 21° b. 30° c. 38° d. 69° e. 71°