A car is able to stop in a distance d. Assuming the same braking force, what distance does this car require to stop when it is traveling twice as fast?
A) d
B) 2 d
C) d
D) 4 d
E) 2 d
D
You might also like to view...
A telescope is constructed with two lenses separated by a distance of 25 cm. The focal length of the objective is 20 cm. The focal length of the eyepiece is 5 cm. Calculate the magnitude of the angular magnification of the telescope
a. 6 b. 4 c. 8 d. 10 e. 5
Energy flows from hot to cold and thus from the core to the surface of the Sun
a. True b. False Indicate whether the statement is true or false
Of all his laws, Kepler was proudest of the third. Why was it so appealing in his search for cosmic harmony?
What will be an ideal response?
Aberration: Which of the following statements are correct? (There could be more than one correct choice.)
A. Spherical aberration, but not chromatic aberration, occurs for lenses. B. Chromatic aberration, but not spherical aberration, occurs for lenses. C. Both chromatic aberration and spherical aberration occur for lenses. D. Both chromatic aberration and spherical aberration occur for spherical mirrors.