5) The computational model below shows the total energy (Etotal) of a closed system, which is equal to the sum of the total kinetic energy (KEtotal) and the gravitational potential energy (U) between the masses m1 and m2 separated by distance r. Etotal=KEtotal+U, where U=−G^m1m2r
Which statement explains the reason why planets closer to the sun orbit faster than those that are farther away?
-The value of Etotal increases significantly the closer the planet is to the sun. -The value of KEtotal increases because U has a larger negative value.
-The value of KEtotal increases because U has a lesser negative value.
-The value of G increases significantly the closer the planet is to the sun.

6)In a closed system, the initial kinetic energy is 70 J. The initial potential energy is 20 J. What is the total final energy of the system?
70 J

45 J

50 J

90 J

Part a determine the magnitude of the x component of f using scalar notation. fx f x = nothing lb request answer part b determine the magnitude of the y component of f using scalar notation. fy f y = nothing lb request answer part c determine the magnitude of the z component of f using scalar notation. fz f z = nothing lb request answer provide feedback figure1 of 1a force vector acting on a ring attached to the ground is shown in the xyz space together with its x, y, and z components lying on the corresponding positive axes. the ring is located at the origin. force f is located in the first octant. f makes an angle of 60 degrees with its x component and an angle of 45 degrees with its y component. a force vector acting on a ring attached to the ground is shown in the xyz space together with its x, y, and z components lying on the corresponding positive axes. the ring is located at the origin. force f is located in the first octant. f makes an angle of 60 degrees with its x component and an angle of 45 degrees with its y component.

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters