A little girl with a mass of 49 kilograms is falling to Earth using a parachute....
A little girl with a mass of 49 kilograms is falling to Earth using a parachute. How much air drag does she need so that she falls at terminal velocity? Newtons
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A little girl with a mass of 49 kilograms is falling to Earth
using a parachute....
Express each answer as a magnitude. (No negative answers) A girl has a mass of 63...
Express each answer as a magnitude. (No negative answers) A girl has a mass of 63 kg. What is her weight? She jumps out of an airplane. What is her rate of acceleration at that moment? She opens her parachute. This causes her to experience a drag force of 970 N, slowing her down. What is the net force acting on her at this moment? What is her rate of acceleration at this moment? As she slows, the drag force...
Lecture I1.3. Drag Force 267 26 percent of greenhouse gas emissions come from cars, with a typica...
Lecture I1.3. Drag Force 267 26 percent of greenhouse gas emissions come from cars, with a typical passeng emitting about 4.7 metric tons of carbon dioxide per year. Assuming all of the rom overcoming air resistance (ignoring internal resistances and stopping/starting much would we need to reduce the 70 mph speed limits vehicle emissions are how to obtain a 20 percent cut in greenhouse er emissions from cars? 14. A small particle with a radius of 0.1 mm and drag...
A sky diver with a mass of 75.0kg jumps out of an airplane as part of a local air show
2. A sky diver with a mass of 75.0kg jumps out of an airplane as part of a local air show.a. Calculate the drag force on the sky diver when she reaches her terminal velocity.b. Each cord connecting the sky diver and her parachute is rated to hold up to 105N of tension. How many cords must the parachute have in order to ennsure safe operation when the sky diver opens the parachute after she reaches terminal velocity?c. Upon opening,...
1. A rocket is launched vertically from the Earth, and the thrust (pushing force) from the engines...
1. A rocket is launched vertically from the Earth, and the thrust (pushing force) from the engines is directed upward, and has a magnitude of 5.00 x 106 N. The mass of the rocket is initially 2.00 x 105 kg. (a) What is the initial acceleration of the rocket, assuming you can neglect air resistance? (b) After the rocket has been in flight for a while, burning and exhausting a lot of fuel, its mass has decreased to 1.20 x 105 kg, and...
n Chapter 5 we look at drag due to air resistance for falling objects. Using the...
n Chapter 5 we look at drag due to air resistance for falling objects. Using the Dv form of dr discussed in class, write a program (or solve analytically) to determine how long (sec.) and how far m) a 150 gram ball whose radius is 3.5cm would fall before it reached 75% of its terminal velocity. Assume ball falls in air whose density is 1.21 kg/m3, has a drag coefficient C .3, cross-sectional area s just the disk a sphere...
(b) An asteroid of mass M falls through the Earth's atmosphere and reaches terminal velocity. Assume...
(b) An asteroid of mass M falls through the Earth's atmosphere and reaches terminal velocity. Assume that the atmosphere is a turbulent fluid, so that a drag force is exerted on an object moving at velocity v. The quantity b is a constant. You can assume that the motion is sufficiently close to the Earth that the acceleration due to gravity is constant. (i) Explain what you understand by "turbulent flow" 121 (ii) Use Newton's Second Law to determine an...
This project discovers the free-falling velocity of skydivers before the parachutes are opened us...
this project discovers the free-falling velocity of skydivers
before the parachutes are opened using the laws of physics and
calculus. you can ignore the wind in the horizontal direction. let
m be the mass of a skydiver and the equipment, g be the
acceleration due to gravity. the free-falling velocity of a
skydiver, v(t), increases with time. the force due to the air
resistance is correlated with the velocity, that is, Fr=kv^2, where
k>0 if called the drag constant related...
The radius of the earth is a little less than 4000 miles. Using that number, how...
The radius of the earth is a little less than 4000 miles. Using that number, how much faster is the surface moving from west to east at the equator than it would be moving if the earth were not rotating (in mph)? Consider, as in class, that air moving with the surface at the equator is warmed by the sun, rises and starts to move north. If it continues to move from west to east at the same speed that...
QUESTION 17 The International Space Station which presently has mass of about 420,000 kilograms, maintains an orbit wit...
QUESTION 17 The International Space Station which presently has mass of about 420,000 kilograms, maintains an orbit with an altitude of between 330 and 435 kilometers (205 and 270 miles respectively) above the Earth surface by means of re-boost maneuvers using the engines of the Zvezda module or visiting spacecraft to compensate for 2 km/month orbital decay due to the atmospheric drag. Calculate the following for the low orbit of the ISS (330 kilometers above the Earth surface), assuming that...
1. A ball is thrown straight up with an initial speed of 30 m/s. How much...
1. A ball is thrown straight up with an initial speed of 30 m/s. How much time does it take for the ball to reach the top of it's trajectory? 2. For 3.0s, Allison exerts a net force of 10.0 N on a 6.7-kg shopping cart that was initially at rest. Find the acceleration of the cart, and show that it moves a distance of 6.7m. 3. Suzie skydiver with her parachute has a mass of 50 kg. Before opening...
Lecture I1.3. Drag Force 267 26 percent of greenhouse gas emissions come from cars, with a typical passeng emitting about 4.7 metric tons of carbon dioxide per year. Assuming all of the rom overcoming air resistance (ignoring internal resistances and stopping/starting much would we need to reduce the 70 mph speed limits vehicle emissions are how to obtain a 20 percent cut in greenhouse er emissions from cars? 14. A small particle with a radius of 0.1 mm and drag...
n Chapter 5 we look at drag due to air resistance for falling objects. Using the Dv form of dr discussed in class, write a program (or solve analytically) to determine how long (sec.) and how far m) a 150 gram ball whose radius is 3.5cm would fall before it reached 75% of its terminal velocity. Assume ball falls in air whose density is 1.21 kg/m3, has a drag coefficient C .3, cross-sectional area s just the disk a sphere...
(b) An asteroid of mass M falls through the Earth's atmosphere and reaches terminal velocity. Assume that the atmosphere is a turbulent fluid, so that a drag force is exerted on an object moving at velocity v. The quantity b is a constant. You can assume that the motion is sufficiently close to the Earth that the acceleration due to gravity is constant. (i) Explain what you understand by "turbulent flow" 121 (ii) Use Newton's Second Law to determine an...
this project discovers the free-falling velocity of skydivers
before the parachutes are opened using the laws of physics and
calculus. you can ignore the wind in the horizontal direction. let
m be the mass of a skydiver and the equipment, g be the
acceleration due to gravity. the free-falling velocity of a
skydiver, v(t), increases with time. the force due to the air
resistance is correlated with the velocity, that is, Fr=kv^2, where
k>0 if called the drag constant related...
QUESTION 17 The International Space Station which presently has mass of about 420,000 kilograms, maintains an orbit with an altitude of between 330 and 435 kilometers (205 and 270 miles respectively) above the Earth surface by means of re-boost maneuvers using the engines of the Zvezda module or visiting spacecraft to compensate for 2 km/month orbital decay due to the atmospheric drag. Calculate the following for the low orbit of the ISS (330 kilometers above the Earth surface), assuming that...
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