An object is dropped from rest from a height 7 × 10^6 m above the surface...
An object is dropped from rest from a height 7 × 10^6 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth? The acceleration of gravity is 9.81 m/s2 and the radius of the Earth is 6.37 × 10^6 m. Answer in units of km/s.
Homework Answers
We have to apply conservation of energy to surface and height h
from which we will get the velocity. 
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An object is dropped from rest from a height 7 × 10^6 m above
the surface...
From what height off the surface of the Earth should an object be dropped to initially...
From what height off the surface of the Earth should an object be dropped to initially experience an acceleration of 0.63 g? From what height off the surface of the Earth should an object be dropped to initially experience an acceleration of 0.63 g? 1655 km 2357 km 1314 km 3741 km
Show all work FBD and thoughts Please 21. (8 pts) An object is dropped from rest...
Show all work FBD and thoughts
Please
21. (8 pts) An object is dropped from rest from a height 4 x 10m above the surface of the earth. If there is no air resistance, with what speed will it strike the earth? The universal gravitational constant G is 6.67x10-Nm²/kg?. The mass of the earth is 5.98x1024kg. The radius of the earth is 6.38x106m.
Answer in units of m/s. Fo tic av 012 10.0 points An object is thrown vertically...
Answer in units of m/s. Fo tic av 012 10.0 points An object is thrown vertically up and attains an upward velocity of 50 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s. Answer in units of m/s 013 10.0 points A rock is thrown downward from an unknown height above the ground with an initial speed of 13 m/s....
An object of mass 700 kg is released from rest 1000 m above the ground and...
An object of mass 700 kg is released from rest 1000 m above the ground and allowed to fall under the influence of gravity. Assuming the force due to air resistance is proportional to the velocity of the object with proportionality constant b=50 N-sec/m, determine the equation of motion of the object. When will the object strike the ground? (Hint: Here the exponential term is too large to ignore. Use Newton's method to approximate the time t when the object...
An 80 kg object is dropped from rest from a height of 25 meters above the...
An 80 kg object is dropped from rest from a height of 25 meters above the ground. Use the concept of energy conservation to find its speed when it is 10 meters above the ground.
How high does a rocket have to go above the Earth's surface until its weight is...
How high does a rocket have to go above the Earth's surface until its weight is 0.3 times its weight on the Earth's surface? The radius of the earth is 6.37 x 10^6 m and the acceleration of gravity is 9.8 m/s^2. Answer in units of km.
An 80 kg object is dropped from rest from a height of 25 meters above the...
An 80 kg object is dropped from rest from a height of 25 meters above the ground. Use the concept of energy conservation to find its speed when it is 15 meters above the ground. a.28 m/s b.6.4 m/s c.14 m/s d.9.9 m/s
2. Suppose an object of mass 15 kg is dropped from a height near the surface...
2. Suppose an object of mass 15 kg is dropped from a height near the surface of the Earth, so the acceleration due to gravity is -9.8, and assume the drag due to air 0.47. Assume the object's position is measured in meters above the ground, so velocity (a) Write down, but do not solve, a differential equation whose solution would give resistance is proportional to the square of object's velocity, with drag coefficient γ and acceleration are both negative...
6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from...
6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the top of the tower and that the effects of air resistance were negligible, how long would it take the object to fall, in seconds? What is the velocity of the object when it hits the ground? 7. A ball is thrown directly downward with an initial speed of 9.50 m/s from a height of 30.0 m. After what time interval does...
As a body is projected to a high altitude above the earths surface, the variation of...
As a body is projected to a high altitude above the earths surface, the variation of the acceleration of gravity with respect to alitude y must be taken into account. Neglecting air resistance, this acceleration is determined from the formula a -go R2 /(R + ν , where g.-9.81 m/s 2 e constant gravita or al acceleration at se a la e R-E 56 m s e radius of he earth and the positive d rection is measured upward. Part...
Show all work FBD and thoughts
Please
21. (8 pts) An object is dropped from rest from a height 4 x 10m above the surface of the earth. If there is no air resistance, with what speed will it strike the earth? The universal gravitational constant G is 6.67x10-Nm²/kg?. The mass of the earth is 5.98x1024kg. The radius of the earth is 6.38x106m.
Answer in units of m/s. Fo tic av 012 10.0 points An object is thrown vertically up and attains an upward velocity of 50 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s. Answer in units of m/s 013 10.0 points A rock is thrown downward from an unknown height above the ground with an initial speed of 13 m/s....
An object of mass 700 kg is released from rest 1000 m above the ground and allowed to fall under the influence of gravity. Assuming the force due to air resistance is proportional to the velocity of the object with proportionality constant b=50 N-sec/m, determine the equation of motion of the object. When will the object strike the ground? (Hint: Here the exponential term is too large to ignore. Use Newton's method to approximate the time t when the object...
2. Suppose an object of mass 15 kg is dropped from a height near the surface of the Earth, so the acceleration due to gravity is -9.8, and assume the drag due to air 0.47. Assume the object's position is measured in meters above the ground, so velocity (a) Write down, but do not solve, a differential equation whose solution would give resistance is proportional to the square of object's velocity, with drag coefficient γ and acceleration are both negative...
As a body is projected to a high altitude above the earths surface, the variation of the acceleration of gravity with respect to alitude y must be taken into account. Neglecting air resistance, this acceleration is determined from the formula a -go R2 /(R + ν , where g.-9.81 m/s 2 e constant gravita or al acceleration at se a la e R-E 56 m s e radius of he earth and the positive d rection is measured upward. Part...
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