Physics

Physics, 01.09.2019 09:30, sherry59Sherry59

9. carlos jumps out of a hovering helicopter. after he opens his parachute, his acceleration due to gravity decreases
to zero. this is because
a the force of air resistance becomes equal in magnitude to his weight.
b. the force of gravity has become zero.
c. air resistance must be zero
d. he must have struck the ground,

9. carlos jumps out of a hovering helicopter. after he opens his parachute, his acceleration due to

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Physics, 21.06.2019 23:00, blackwell0315

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

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Physics, 22.06.2019 02:00, honeybaby675610

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

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Physics, 28.07.2019 06:00, sandy3711

Askydier jumps out of a hovering helicopter so there is no forward velocity. what is the skydivers acceleration/11170085/84c6e0eb? utm_source=registration

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Physics, 08.11.2019 02:31, luximartinez

The first man jumps in his parachute does not open. he accelerates at 10 m/s squared for four seconds before the parachute opens how fast is he going just before the parachute opens

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