chapter 2 vocab

Question 1

motion under the influence of gravitational pull only

Answer 1

free fall

Question 2

the action force and the reaction force that occur in an interaction

Answer 2

force pair

Question 3

mutual action between objects during which each object exerts an equal and opposite force on the other

Answer 3

interaction

Question 4

every object continues in a state of rest, or in a state of motion in a straight line at a constant speed, unless acted upon by a net force

Answer 4

newton’s 1st law of motion

Question 5

the acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object

Answer 5

newton’s 2nd law of motion

Question 6

whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object

Answer 6

newton’s 3rd law of motion

Question 7

the speed at which the acceleration of a falling object terminates when air resistance balances its weight

Answer 7

terminal speed

Question 8

terminal speed in a given direction (often downward)

Answer 8

terminal velocity