Studied by 22 people

5.0(1)

Get a hint

Hint

1

transfer of energy

Work is defined as the ________ when a force is applied to an object and causes it to move.

New cards

2

potential energy

The ________ associated with a conservative force can be calculated using the formula: PE=- Wc, where Wc is the work done by the conservative force and PE is the ________.

New cards

3

Conservative forces

________ are forces that do not dissipate energy and do not depend on the path taken by the object.

New cards

4

Power

________ is the rate at which work is done or energy is transferred.

New cards

5

Work can be calculated using the formula

W = F x d x cos(theta), where F is the force applied, d is the distance moved, and theta is the angle between the force and the displacement vectors

New cards

6

Power can be calculated using the formula

P = W/t, where W is the work done and t is the time taken

New cards

7

The work-energy theorem can be written as Wnet = KEf

KEi, where Wnet is the net work done, KEf is the final kinetic energy, and KEi is the initial kinetic energy

New cards

8

The potential energy associated with a conservative force can be calculated using the formula

PE = -Wc, where Wc is the work done by the conservative force and PE is the potential energy

New cards

9

pulling in two dimensions

no vertical work because no accomplishment/movement

New cards

10

when will work be negative

when a force is acting in the direction opposite to the direction of motion

New cards

11

area under the curve is work

area under the curve is work

New cards

12

the work done to lift something

you give an object precisely that much gravitational potential energy

New cards

13

pe grav equation

pe=mgh

New cards

14

pushing a crate horizontal

angle is 0 degrees cos 0=1

New cards

15

work to make something move

acceleration w=fd w=mad

New cards

16

if negative net work is done

body's kinetic energy decreases by an amount W net force exerted on a body opposite to the body's direction of motion reduces speed and kinetic energy

New cards

17

mass is doubled, kinetic energy is

doubled

New cards

18

if speed is doubled, kinetic energy is

4 times as much capable of doing 4 times as much work

New cards

19

kinetic energy of a group of objects

sum of kinetic energies of individual objects

New cards

20

hooke's law equation

f=kx

New cards

21

net work in relation to kinetic energy

=1/2 mvinitial squared-1/2 mvfinal squared equals change in kinetic energy

New cards

22

forces for which work done does not depend on path taken but on initial and final positions

conservative forces gravity

New cards

23

roller-coaster

assuming no energy work done getting car up=potential gravitational energy at the top=kinetic energy at bottom

New cards

24

energy losses

multiply loss by height before subtracting because loss is in n/m

New cards