A car is traveling counterclockwise along a circular bend in the road whose effective radius is 100 m. At a certain instant of time, the car is traveling due north, has a speed of 10 m/s, and is in the process of increasing that speed at a rate of 1 m/s2. The direction of the car’s acceleration at that instant is most nearly
A. North
B. Northeast
C. East
D. Northwest
E. West
F. Southwest
T. Zero
D. Northwest
You might also like to view...
Magnetic Poles: If you were to cut a small permanent bar magnet in half,
A. one piece would be a magnetic north pole and the other piece would be a south pole. B. neither piece would be magnetic. C. each piece would in itself be a smaller bar magnet with both north and south poles. D. None of these statements is true.
A super train is moving along a track at a speed close to the speed of light. You are watching the train from the ground. You observe lightning to strike in two places along the track, a mile apart, at precisely the same time. What would someone on the train say?
A) The two bolts of lightning struck at different times, and they struck at places that are less than a mile apart. B) The two bolts of lightning struck at different times, and they struck at places that are more than a mile apart. C) The two bolts of lightning struck at the same time, and they struck at places that are less than a mile apart. D) The two bolts of lightning struck at different times, and they struck at places that are precisely a mile apart.
Two point charges attract each other with an electric force of magnitude F. If one charge is reduced to one-third its original value and the distance between the charges is doubled, what is the resulting magnitude of the electric force between them?
1.1/12 F 2.1/3 F 3.1/6 F 4.3/4 F 5.3/2 F
If the Sun ceased to generate nuclear fusion in its core, the Sun would immediately begin to collapse inward
a. True b. False Indicate whether the statement is true or false