Match the followingEnergy due to position (height) Choose.Speed of an object is doubledChoose.Energy due to motionChoose.Height of an object is doubledChoose. P Choose.Choose.Gravitational Potential Energy increases 4 timesKinetic EnergyGravitational Potential EnergyKinetic Energy is increased 4 timesgravitational potential energy is doubledKinetic Energy is doubled

Name: Match the followingEnergy due to position (height) Choose.Speed of an
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Description: Match the followingEnergy due to position (height) Choose.Speed of an object is doubledChoose.Energy due to motionChoose.Height of an object is doubledChoose. P Choose.Choose.Gravitational Potential Energy increases 4 timesKinetic EnergyGravitationa

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Answered: Match the following Energy due to…

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Physics

Match the following Energy due to position (height) Choa Speed of an object is doubled Cho Energy due to motion Cho Height of an object is doubled Cho

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter3: Energy And Conservation Laws

Section: Chapter Questions

Problem 28P: . The fastest that a human has run is about 12 m/s. (a) If a pole vaulter could run this fast and...

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Kinetic energy is commonly referred to as the energy of ___, and potential energy as the energy of ___. (4.2)
One person drops a ball from the top of a building while another person at the bottom observes its motion. Will these two people agree (a) on the value of the gravitational potential energy of the ballEarth system? (b) On the change in potential energy? (c) On the kinetic energy of the ball at some point in its motion?
A crate is being pushed across a rough floor surface. If no force is applied on the crate, the crate will slow down and come to a stop. If the crate of mass 50 kg moving at speed 8 m/s comes to rest in 10 seconds, what is the rate at which the frictional force on the crate takes energy away from the crate?
. The fastest that a human has run is about 12 m/s. (a) If a pole vaulter could run this fast and convert all of her kinetic energy into gravitational potential energy, how high would she go? (b) Compare this height with the world record in the pole vault.
An older-model car accelerates from 0 to speed v in a time interval of t. A newer, more powerful sports car accelerates from 0 to 2v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare the power of the two cars.
A flea is able to jump about 0.5 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building! When an animal jumps, it converts work done in contracting muscles into gravitational potential energy (with some steps in between). The maximum force exerted by a muscle is proportional to its cross-sectional area, and the work done by the muscle is this force times the length of contraction. If we magnified a flea by a factor of 1 000, the cross section of its muscle would increase by 1 0002 and the length of contraction would increase by 1 000. How high would this superflea be able to jump? (Dont forget that the mass of the superflea" increases as well.)
A flea is able to jump about 0.5 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100-story building! When an animal jumps, it converts work done in contracting muscles into gravitational potential energy (with some steps in between). The maximum force exerted by a muscle is proportional to its cross-sectional area, and the work done by the muscle is this force times the length of contraction. If we magnified a flea by a factor of 1 000, the cross section of its muscle would increase by 1 0002 and the length of contraction would increase by 1 000. How high would this superflea be able to jump? (Dont forget that the mass of the superflea" increases as well.)
. A bicycle and rider going 10 m/s approach a hill. Their total mass is 80 kg. (a) What is their kinetic energy? (b) If the rider coasts up the hill without pedaling, how high above its starting level will the bicycle be when it finally rolls to a stop?
A child jumps tip and down on a bed, reaching a higher height after each bounce. Explain how the child can increase his maximum gravitational potential energy with each bounce.
The massless spring of a spring gun has a force constant k=12N/cm . When the gun is aimed vertically, a 15-g projectile is shot to a height of 5.0 m above the end of the expanded spring. (See below.) How much was the spring compressed initially?