An object with mass 2 kg moves from a location <22, 21, -41> m near the Earth's surface to location <-27, 11, 48> m. What is the change in the potential energy of the system consisting of the object plus the Earth? (Assume that the +y axis points vertically up from the ground.) i

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I Review I Constants An ideal spring stores potential energy Uo when it is compressed a distance xo from its uncompressed length. sS Part C In terms of xo , how much must the spring be compressed from its uncompressed length to store twice as much energy? Express your answer in terms of xo. nν ΑΣφ ? Submit Request Answer Part D In terms of xo, how much must the spring be compressed from its uncompressed length to store half as much energy? Express your answer in terms of x0. ?

The kinetic energy of a system must always be positive or zero. Explain whether this is true for the potential energy of a system.

c) Eddy and his skateboard with mass a of 65 kg ride on a rough horizontal road as shown in Figure 3. At the bottom of an incline, his velocity is 4 m s1. He rides up the incline and reaches the top with a velocity of 1 m s. The difference in height between the top and the bottom of the incline is 0.6 m. 1 m/s 4 m/s 0.6 m Figure 3 Calculate: i. the total energy of Eddy before he rides on the inclined plane, ii. the total energy of Eddy after the rode up the inclined plane, and ii. the net energy loss due to the friction on the inclined plane. (5 marks)

A ball tied to a light string is whirled in a perfect horizontal circle with a constant speed of 3 50 m/s. How much is the work is done on the ball by tension as it moves half of the circular trajectory? The mass of the ball is 1.98 kg, and the diameter of the circular trajectory is 1.60 m.(PAMP212F20) a) 095.2J b) O 152 J c) O47.6 J d) O 76.2 J e) 0OJ

An object of mass m can only move on the +z axis. It is subjected to a force in the +z direction given by F(x) = the origin. a. How much work does this force do if the object moves from z = a b. If at a the block had an initial velocity of magnitude vo in the +z direction, what is its velocity at b if no other force is acting on the object? am where a is a constant and z is the distance from to z = b?

A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let gravitational potential energy be zero at ground level. a)Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g.  b)Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground - Utop).  c)What is the child's final speed, vf in m/s?

Please atleast answer this question