lesson 5- work, force, & energy

Question 1

newtons first law

Answer 1

an object at rest stays and an object at motion stays in motion with same direction

Question 2

law of inertia

Answer 2

inertia: the tendency of an object to do nothing or remain unchanged

Question 3

forces are equal in

Answer 3

magnitude, opposite in direction

Question 4

objects move when a

Answer 4

force moving in one direction is greater than force moving in an opposite direction

Question 5

what direction do objects move in

Answer 5

the direction of unbalanced force

Question 6

force

Answer 6

push or pull on an object

Question 6

formula for force

Answer 6

f = ma

Question 7

what are three conditions that need to happen in order for work to happen

Answer 7

1. there must be force
2. object must move position
3. object must move in same direction as force applied

Question 7

work

Answer 7

energy transferred to an object when a force is applied causing the object to move

Question 8

example of work or no? jason throwing a football

Answer 8

yes

Question 9

example or work or no? reading a paper in class

Answer 9

no

Question 10

what quantity is work?

Answer 10

scalar quantity

Question 11

work formula

Answer 11

w = f x d

Question 12

energy

Answer 12

ability to do work

Question 13

what quantity is energy?

Answer 13

scalar

Question 14

if the is no energy loss in a transfer then

Answer 14

change in energy = work