work, energy, and power

Question 1

equation for work (horizontally)

Answer 1

W=F x d

Question 2

equation for work (at an angle)

Answer 2

W= F x d x cosx

Question 3

unit of measurement for work

Answer 3

Joules (J)

Question 4

How can there be force exerted on an object yet no work being done?

Answer 4

There is no displacement

Question 5

if F and d are perpendicular to each other work equals…

Answer 5

0

Question 6

friction with work

Answer 6

opposes motion
reduces energy

Question 7

kinetic energy

Answer 7

energy due to motion

Question 8

KE equation

Answer 8

K=1/2mv^2

Question 9

kinetic energy can never be…

Answer 9

negative

Question 10

net work done on an object by a net force is equal to…

Answer 10

change in its KE

Question 11

If a car is going 2x faster that the car next to it, it will take ______ times the distance to stop

Answer 11

4x

Question 12

area under the curve of a force vs. displacement is equal to?

Answer 12

work

Question 13

conservative forces

Answer 13

a force that conserves mechanical energy

Question 14

examples of conservative forces

Answer 14

elastic, gravitational, kinetic

Question 15

non-conservative forces

Answer 15

a force that leads to dissipation of mechanical energy

Question 16

examples of non-conservative forces

Answer 16

friction, air resistance

Question 17

gravitational potential energy

Answer 17

stored energy due to location

Question 18

potential energy belongs to a?

Answer 18

system