Review for: Unit 4 – Newton’s Laws of Motion

Review for: Unit 4 – Newton’s Laws of Motion

#1 Newton’s first law of motion is called the law of ______. • Inertia • Acceleration • Interaction • Motion

#2 Newton’s second law of motion is called the law of ___. • Inertia • Acceleration • Interaction • Motion

#3 Newton’s third law of motion is called the law of ___. • Inertia • Acceleration • Interaction • Motion

#4 An object’s inertia is determined by its ____. • Weight • Acceleration • Force • Mass

#5 An object in motion will remain in motion and an object at rest will remain at rest unless ________. • An external force acts on it • The earth moves • It accelerates • Chuck Norris decides for it to change its motion

#6 A force causes ______. • Motion • Acceleration • Weight • Displacement

#7 In outer space, the net force needed to keep a satellite in uniform motion is _____. • Zero • Some number bigger than zero • Equal to its weight

#8 Neglecting air resistance, once a baseball is thrown horizontally its…. • Horizontal motion is uniform • Vertical motion is accelerated • Neither A nor B • Both A and B

#9 In projectile motion, the object’s horizontal motion is uniform because _____. • There is no net external force action on the object horizontally • The object has inertia • Both A and B

#10 In projectile motion, the object’s vertical motion is accelerated because _____. • There is a net force acting vertically on the object (the force of gravity) • The object has inertia • The object seeks to be in its natural state (at rest on the ground)

#11 In projectile motion problems, the variable that both horizontal and vertical have in common is ____. • Distance • Time • Acceleration • Force

#12 A big rig truck hits a VW bug with a force of 2200N. The truck decelerates a little because the car exerts a reaction force… • Much greater than 2200 N • Much less than 2200 N • Of exactly 2200 N • Of an unknown amount since we don’t know the mass of the car

#13 In space, an astronaut can more forward by using a swimming motion. • True • False • Depends on his mass

#14 When the net force on an object is zero, the object must be at rest. • True • False

#15 If you jump off the bleachers, you pull up on the earth with a force equal to your weight. • True • False

#16 A book weighing 53 N lies motionless on the table. The net force on the book is… • 54 N up • 54 N down • 0 N

#17 A bowling ball has more inertia than a marble because it takes up more space. • True • False

#18 According to Newton’s Second Law, as force increases acceleration _______. • Increases • Decreases • Stays the same

#19 According to Newton’s Second Law, as mass increases acceleration _______. • Increases • Decreases • Stays the same

#20 Newton’s 3rd Law always deals with ______ object(s) and _______ force(s). • One; one • One; two • Two; one • Two; two

Questions? Comments?Criticisms? Concerns?Complaints?

Review for: Unit 4 – Newton’s Laws of Motion