While flying horizontally in an airplane, you notice that a string dangling from the overhead luggage compartment hangs at rest at 15 degrees away from the vertical toward the front of the plane. Using this observation, you can conclude that the airplane is ... Select one: a. moving forward at constant speed. b. moving backward at constant speed. c. moving forward and speeding up. d. moving forward and slowing down. e. not accelerating because the string is at rest.
While flying horizontally in an airplane, you notice that a string dangling from the overhead luggage compartment hangs at rest at 15 degrees away from the vertical toward the front of the plane. Using this observation, you can conclude that the airplane is ... Select one: a. moving forward at constant speed. b. moving backward at constant speed. c. moving forward and speeding up. d. moving forward and slowing down. e. not accelerating because the string is at rest.
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Transcribed Image Text:While flying horizontally in an airplane, you notice that a string dangling from the overhead luggage
compartment hangs at rest at 15 degrees away from the vertical toward the front of the plane. Using this
observation, you can conclude that the airplane is ...
Select one:
a. moving forward at constant speed.
b. moving backward at constant speed.
c. moving forward and speeding up.
d. moving forward and slowing down.
e. not accelerating because the string is at rest.
Transcribed Image Text:As car goes round a flat (unbanked) circular track, the frictional force holding it circular motion is F. If the car
doubles its speed what will be the new frictional force? (assuming the frictional force is still less than the
maximum)
Select one:
a. 0.5 F
b. F
С. 2F
d. 4F
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