Physics Jeopardy Free Body Diagrams 1st law2nd law KinematicsMix Up Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy

$100 Free Body Diagrams Draw a free body diagram of a 10 kg box sitting still on a table. What is the net force?

$100 Answer Free Body Diagrams F N = 100 N F g = 100 N F net = 0 N

$200 Free Body Diagrams What is the net force acting on a 40 kg box on the ground that is being pulled from the right with a force of 70 N and to the left with a force of 20 N.

$200 Answer Free Body Diagrams F g = 400 N F N = 400 N F p = 70 NF p = 20 N F net = 50 N right

$300 Free Body Diagrams What is the net force on a 18 kg cat if it is falling out of a tree?

$300 Answer Free Body Diagrams 180 N (This is a very fat cat)

$400 Free Body Diagrams What is the net force on a 10 kg box if it is being dragged to the left with a force of 30 N and there is a 12 N frictional force?

$400 Answer Free Body Diagrams F g = 100 N F N = 100 N F p = 12 N F f = 30 N F net = - 18 N

$500 Free Body Diagrams What is the acceleration on a 15 kg box that is being pushed to the right with a 20 N force and there is a 5 N frictional force?

$500 Answer Free Body Diagrams F g = 150 N F N = 150 N F f = 5 N F net = 15 N Therefore, acceleration = 1 m/s 2 F p = 20 N

$100 Question 1 st law By increasing the mass of an object, you _________ its inertia.

$100 Answer 1 st law Increase

$200 Question 1 st law The law of inertia states that an object_________. a)At rest will remain at rest unless acted on by an outside force. b)Will continue moving at the same velocity unless an outside force acts on it. c)Will continue moving in a straight line unless an outside force acts on it. d)That is not moving will never move unless a force acts on it. e)All of the above f)None of the above

$200 Answer 1 st law e) All of the above

$300 Question 1 st law Inertia is a property of matter that ________.

$300 Answer 1 st law Opposes a change in motion

$400 Question 1 st law Which has a bigger inertia? An elephant slowly on a skateboard, or a monkey riding on a supersonic rocket?

$400 Answer 1 st law The elephant

$500 Question 1 st law On the surface of Jupiter, the acceleration due to gravity is about 3 times that of Earth. What would be the mass of a 120 kg rock on Jupiter?

$500 Answer 1 st law m = 120 kg

$100 Question 2 nd law What is the force applied to a car that has a mass of 1500 kg and accelerates at a rate of 4 m/s 2 ?

$100 Answer 2 nd law F = 6000 N

$200 Question 2 nd law What is the acceleration of a ball falling out of a tree if it weighs 50N and has a mass of 5 kg?

$200 Answer 2 nd law a = 10 m/s 2

$300 Question 2 nd law You push with 20 N on a 10 kg block on a frictionless surface. How fast will the block accelerate?

$300 Answer 2 nd law a = 2 m/s 2

$400 Question 2 nd law In order for an object to be accelerating, what must be present?

$400 Answer 2 nd law A net force

$500 Question 2 nd law You push with 60 N on a 10 kg block and there is a 20 N force of friction. How fast will the block accelerate?

$500 Answer 2 nd law a = 4.0 m/s^2

$100 Question Kinematics How fast is a car accelerating if it starts from rest and in 4 seconds ends up at 20 m/s?

$100 Answer Kinematics a = 5 m/s 2

$200 Question Kinematics What is the acceleration of a boy on a bike if he starts out at 3m/s and in 6 seconds ends up at 9 m/s?

$200 Answer Kinematics a = 1 m/s 2

$300 Question Kinematics What is the final velocity of a ball rolling down a hill if when you release it from you hand you roll it at 2 m/s, and it rolls down the hill in 7 seconds with an acceleration of 1.5 m/s 2 ?

$300 Answer Kinematics v f = 12.5 m/s

$400 Question Kinematics How far will a car travel if it accelerates from rest at a rate of 6 m/s 2 for 3 seconds?

$400 Answer Kinematics d = 27 m

$500 Question Kinematics How long will a ball thrown vertically upward take to reach the top of its path if is thrown with a velocity of 16 m/s?

$500 Answer Kinematics t = 1.6 seconds

$100 Question Mix Up What is the net force on an object if it is moving at a constant velocity?

$100 Answer Mix Up F net = 0 N

$200 Question Mix Up How fast will a ball be falling if you throw it downward at a velocity of 8 m/s and it falls for 4 seconds?

$200 Answer Mix Up v = -48 m/s

$300 Question Mix Up What units make up the unit Newtons (N)?

$300 Answer Mix Up Kg x m/s 2

$400 Question Mix Up Suppose a particle is accelerated through space by a constant 10 N force. Suddenly the particle encounters a second force of 10 N in a direction opposite to that of the first force. The particle _________. a)Is brought to a rapid halt b)Gradually decelerates to a halt c)Continues at the speed it had when it encountered the second force d)Theoretically accelerates to speeds approaching the speed of light e)None of the above

$400 Answer Mix Up c) Continues at the speed it had when it encountered the second force.

$500 Question Mix Up If you apply a forward force to a 1000 kg car of 600 N and there is a frictional force of 70 N, what ist he car’s acceleration?

$500 Answer Mix Up a =.53 m/s 2

Final Jeopardy What is the term used to describe objects in motion that only are being affected by gravity?

Final Jeopardy Answer Freefall