If an earth satellite in an elliptical orbit weights 777 Newton’s when it is clo
ID: 1781138 • Letter: I
Question
If an earth satellite in an elliptical orbit weights 777 Newton’s when it is closest to the earth, what happens to it’s weight when it is furthest from the earth? [12] If an eart h satellite in an elliptical orbit weighs 777 Newtons when it is closest to the earth, what happens to its weight when it is furthest from the earth? B) remains the same decreases C) increases D) depends on how fast it is moving [13] An object falls from the top of a tall building, through still air, to the ground below. Air friction IS present. Compare the kinetic energy (K.E.) of the object just before striking the ground to its potential energy (P.E.) at the top of the building. A Its K.E. will be less than its P.E. B) Its K.E. will be equal to its P.E C) Its K.E. will be greater than its P.E. D) It is impossible to tell. [14] If you push twice as hard against a stationary brick wall as your lab partner does, the amount of mechanical work you do on the wall: A) doubles. remains constant at zero C) is cut in half. D) remains constant but non-zero. (1S] We know that an object undergoing Uniform Circular Motion is accelerating because: A) Its velocity is constantly changing in magnitude. B) It wants to go straight. C) Its speed is constantly changing. D its velocity is constantly changing its directio
Explanation / Answer
12) Weight would be less at farthest point point from Earth because Earth's gravitational pull will be least at this point and weight is
Weight, W = m x g
Value of g will vary as we move away from Earth, so at farthest point weigh will decrease .
13) Potential energy will be maximum at to pig the building, while Kinetic energy will be zero. As body starts falling its Potential energy will start converting into Kinetic energy. So, considering air friction is present, it's kinetic energy before striking will be less than its potential energy .
15) Accelerating objects are objects which are changing their velocity - either the speed (i.e., magnitude of the velocity vector) or the direction. An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.
Please rate my answer...
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.