Work And Energy True or False 1. True or False Only the net force acting on an object can do work. True or False If a particle remains at rest, then we can conclude that there is no work done on it. 3. True or False A force that is perpendicular to the velocity of the object is not doing work to the object. 4. True or False The force that causes the acceleration of an object following a circular path at a constant speed does work on the object.

A child exerts a horizontal 15 N force on a 10 kg box to push it 7 m across a floor that has a coefficient of kinetic friction of 0.1 with the box.  (a) How much work does the child do on the box?  (b) How much work does gravity do on the box?  (c) How much work does the normal force do on the box?  (d) How much work does the force of kinetic friction do on the box?  (e)  What is the total work done on the box?  (f) How much kinetic energy has the box gained during this process?  (g)  If the box was initially at rest, then how fast is the box moving at the end of this process?

An object is thrown straight up. Which of the following is true about the sign of work done by the gravitational force while the object moves up and then down? a. Work is negative on the way up, work is positive on the way down b. Work is negative on the way up, work is negative on the way down c. Work is positive on the way up, work is negative on the way down d. Work is positive on the way up, work is positive on the way down

A motorcyclist runs out of gas on a level road 250 m from the gas station. She pushes the 220 kg motorcycle with a constant force of 150 N. (A) How much work does she do? (B) For the motorcycle, if it was moving with a kinetic energy equal to the work done on it, how fast would it move?

1. A crate of mass 10.0 kg is pulled up a rough 20 degrees incline. The pulling force is 100 N parallel to the incline. The coefficient of kinetic friction is 0.4 and the crate is pulled 5.0 m. Show complete solution please. (a) How much work is done by gravity? (b) How much energy is lost due to friction? ( c) How much work is done by the 100N-force? (d) How much work is done the normal force? (e) What is the total or net work done on the crate? (f) If the package is pulled from rest, what is the speed of the crate after it has been pulled 5.0m? Use Work-energy equation (g) If the package is pulled with an initial speed of 1.5 m/s, what is the speed of the crate after it has been pulled 5.0 m? Use Work-energy equation

Which of the following statements are true? O If you apply a force to a moving object, you are doing work on that object. O It is possible to feel exertion without doing work on anything. O You feel exertion only when you do work on external objects. O None of the other statements are true. If a machine is more powerful, it can do work for longer amounts of time. O If you want to keep a heavy object from falling. work must be done on it to accomplish that goal.

20objeto%2C%20restringido%20a%20moverse%20en%20el%20eje%20x%2C%2... INGLÉS ESPAÑOL FRANCÉS The potential energy of an object, restricted to move on the x axis, is given by U (x) = 26x 4 - 3.0 x 2 What is its corresponding force? Enviar come erdado Contribult ENG 6 PM

A 44-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 1.5 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar. m

ee Respor X A Hiradetsi Custodio - CP Work, Po x LA Meet gcb-nnv-twt 4 X docs.google.com/document/d/1BcrycdwOex2Sg8-rzLNgHDylzKfwbaAToFecmiA8Cfl/edit n.org bookmarks O Dashboard ustodio - CP Work, Power, Energy Test Free Response DL w Insert Format Tools Add-ons Help Last edit was 42 minutes ago 100% Normal text Arial BIUA 11 + 3. Determine the work done by gravity on a 5 kg bowling ball if the bowling ball.. a) Falls straight down 8 m off the left edge of the ramp 30 b) Rolls 16 m down the ramp c) Rolls 10 m up the ramp d) Rolls 6m across level ground. nything

DETAILS PREVIOUS ANSWERS X J OSCOLPHYS2016ACC 7.3.P.016. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A hydroelectric power facility converts the gravitational potential energy of water behind a dam to electric energy. (For each answer, enter a number.) (a) What is the gravitational potential energy (in J) relative to the generators of a lake of volume 71.0 km³ (mass = 7.10 x 1013 kg), given that the lake has an average height of 35.0 m above the generators?