The net force always points in the same direction as:
a. the displacement.
b. the frictional force.
c. the velocity.
d. the force of gravity.
e. the acceleration.
e
You might also like to view...
The ______________ distance is used in calculating work
a. normal b. square of c. perpendicular d. parallel
What is important about the habitable zone around a star that makes astronomers believe life could exist there?
a. The level of UV radiation from the star is minimal there. b. Only in the life zone can complex organic molecules be found. c. Planets in the life zone will always have oxygen atmospheres. d. In the life zone water can exist as a liquid.
The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature of
a. gravitation. b. fractals. c. air resistance. d. dynamical chaos. e. quantum mechanics.
If a hydrogen emission line appears at 656 nm in the laboratory, what can we say about a cloud of hydrogen gas, with an emission line at 680 nm?
A) It is receding away from us. B) It is moving toward us. C) It is neither receding nor approaching us. D) There is not enough information to say anything about the cloud's motion.