1.)Most of us don\'t get to experience truly extreme accelerations. An exception
ID: 1413751 • Letter: 1
Question
1.)Most of us don't get to experience truly extreme accelerations. An exception are navy pilots who must take off and land on aircraft carriers. To see what it is like to takeoff from an aircraft carrier see here: http://www.youtube.com/watch?v=TocY6N5thtQ At the end you see a woman pilot experience her first shot off a carrier. Here is a male pilot's first shot: http://www.youtube.com/watch?v=fYHDy81QO2Y Pretty intense isn't it? 0 to 180 mph in 200 ft, corresponds to 0 to 80 m/s in 61 meters or approximately 5 g's of acceleration (52 m/s^2). During the shot the pilot feels herself pushed back into her seat with an enormous force. What direction is the NET force on her?
In the rear direction.
In the up direction.
In the forward direction.
There is no way to tell.
I know the answer to this question is in the forward direction according to class. I need the answers to the next two questions. Please explain why!
2.In the cat shot video, the woman pilot experiences 5g's of acceleration or 52 m/s2. If she weighs normally 120 pounds on land, what is her apparent weight during this extreme acceleration?
she is weightless.
24 pounds.
120 pounds
600 pounds.
3.For a ride on the ultimate roller-coaster Danica Spears, a college student from Pensacola takes a ride with one of the blue angels. See the video here:
http://www.youtube.com/watch?v=EDzpnufOSTo
In the last half of the video the plane makes a high velocity tight turn which is horizontal to the ground and they achieve 7.4 g's of acceleration. During the turn the plane is turned sideways (wings perpendicular to the ground) and the turn is vertical as Danica is situated. She feels herself (and you can see it on her face) pulled strongly to the floor with a gigantic force. What is the actual direction of the force on her (directions are relative to way Danica is facing)?
in the upwards direction.
in the downwards direction
in the forward direction.
in the rear direction.
she is weightless.
24 pounds.
120 pounds
600 pounds.
3.For a ride on the ultimate roller-coaster Danica Spears, a college student from Pensacola takes a ride with one of the blue angels. See the video here:
http://www.youtube.com/watch?v=EDzpnufOSTo
In the last half of the video the plane makes a high velocity tight turn which is horizontal to the ground and they achieve 7.4 g's of acceleration. During the turn the plane is turned sideways (wings perpendicular to the ground) and the turn is vertical as Danica is situated. She feels herself (and you can see it on her face) pulled strongly to the floor with a gigantic force. What is the actual direction of the force on her (directions are relative to way Danica is facing)?
in the upwards direction.
in the downwards direction
in the forward direction.
in the rear direction.
Explanation / Answer
2)since women pilot experiences 5g's of acceleration there for her apparent weight during this extreme acceleration 5x120 = 600 ponds
3)the centrifugal force will work in the direction away from the radius and since the pilot turn the plane sideways (wings perpendicular to the ground) she will be horizontal with respect to ground and experience downwards direction force with respec to denica facing
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