Lesson 3: Newton's Laws of Motion

Question 1

a change in an object’s position over time

Answer 1

motion

Question 2

the object the appears to stay in place when comparing to see if something is moving

Answer 2

reference point

Question 3

the measure of the distance of an object in a given amount of time

Answer 3

speed

Question 4

a quantity that describes the speed of an object and its direction of travel

Answer 4

velocity

Question 5

the rate at which velocity changes

Answer 5

acceleration

Question 6

Newton’s first law is sometimes called the

Answer 6

law of inertia

Question 7

the tendency of objects to resist any change in motion

Answer 7

inertia

Question 8

when the force increases, acceleration of an object with constant mass increases with the same amount of the force, so it is

Answer 8

directly proportional

Question 9

Since acceleration increases when mass increases, it is

Answer 9

inversely proportional

Question 10

Newton’s third law is sometimes called

Answer 10

action and reaction forces

Question 11

the force of attraction between objects due to their masses

Answer 11

gravity

Question 12

a set of objects that are all stationary with respect to each other

Answer 12

reference frame