Activity Proper:Activity No. 1- Three in a Row: Work, Energy, and Power1. A 35.0 kg child climbs a 6.00 m long slide that isinclined 30° with the horizontal. What is thegravitational potential energy of the child withrespect to the ground when it reaches the top ofthe slide?Hint: Use the equation for PE: U = mgAy = mgh"h-(6.0 m) sin 3030Solution and Answer:Page 2 of 42. Which has greater kinetic energy - a 2.0 kg body moving at 3.0 m/s or a 3.0 kgbody moving at 2.0 m/s? Prove your answer.Solution and Answer:6.00 m-

Given Mass of child, M = 35 kg Length of slide, =L = 6.00 m Angle of inclination of slide = 30°…

Answered: A 35.0 kg child climbs a 6.00 m long…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q33
A 28 kg child jumps on a spring-driven pogo stick. At one point, the child stands on the stick so that only their weight pushes the spring down. If the spring compresses by 8 cm, a) What is the spring constant of the pogo stick?b) What is the spring potential energy?
4G: E moodle.nct.edu.om 1 my youuuun 1. A massless rope that run over a frictionless pulley as shown in the figure. If M₁ = 4 Kg and M₂ = 9.5 Kg, M₁ M₂ Part A: Calculate the a) acceleration produced in the pulley in (m/s²) b) tension in the rope in Newton (N) :: Part B: If the masses start moving from rest after 0.8 s, calculate, c) the distance travelled by the mass M₁ in (m) d) the velocity with which the mass M₂ will move in 0.8s, (m/s): (e) The direction in which M₁ and M₂ move will be + 1:10
On a playground slide, a child has potential energy PE = 450.0 J at the top of the slide. Thechild’s mass is 25.0 kg. (For simplicity, take the value of g to be 10.0 m/s2 in this problem.) When the child slides down to the bottom of the slide, her KE = 300.0 J. a) What was the height of the slide?b) How much was the work done by friction?c) How fast was the child moving when she reached the middle of the slide? (Assume that thework done by friction is half of what you get in (b). Note that the PE2 is not zero this time.)
A ball toy of mass 34.6 g is thrown straight up with an initial speed of 3.6 m/s. Neglect air resistance. If the gravitational potential energy is taken to be zero at the maximum height the toy reaches, what would the gravitational potential energy be in J when it leaves the hand? Give your answer to 2 decimal places.
How far must you stretch a spring with k = 1700 N/m to store 230 J of energy? Express your answer in meters. m As =
4. This Olympic skeleton athlete slides down an icy track head first. The track has many twists and turns with a total height of 102.75 m. If the 99.375 kg man has a speed of 27 m/s at the bottom, what was the total work done on him by friction and air resistance slowing him down? (In other words, what was the energy lost to friction and air resistance?) He starts from rest at the top. Previous submissions:
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A 2.3 kg mass starts from rest at point A and moves along the x-axis subject to the potential energy shown in the figure below. PE 30 J 25 J 20 J 15 J D 10 J 5 J 2 m 4 m 6 m 8 m 10 m (a) Determine the speed (in m/s) of the mass at points B, C, D. (For each answer, enter a number.) point 4.7 m/s В X Is energy conserved? If so, how do you know it is conserved? How does the total energy at A compare to the total point energy at any other point. m/s X Is energy conserved? If so, how do you know it is conserved? How does the total energy at A compare to the total point energy at any other point. m/s
A 0.23-kg stone is held 1.5 m above the top edge a water well and then dropped into it. The well has a depth of 5.3 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system before the stone is released? J (b) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone-Earth system when it reaches the bottom of the well? J (c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well? J

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