template created by pamela lovin/lrhs, wake county public schools, south carolina welcome to

Template created by Pamela Lovin/LRHS, Wake County Public Schools, South Carolina

Welcome to


Laws of Motion JeopardyLaws of Motion Jeopardy

Final Jeopardy

300

500

400

100

Newton’s ThirdLaw

Newton’s ThirdLaw

200

300

400

500

100

200

100

400

300

500

200

300

400

500

100

200

300

400

500

100

200

Horizontal andVertical MotionHorizontal andVertical Motion

Math and Graphs

Math and Graphs

Newton’s FirstLaw

Newton’s FirstLaw

Newton’s SecondLaw

Newton’s SecondLaw


Newton’s First Law 100

• Question-- What is Newton’s first law?


Newton’s First Law 100

• Answer-- A body in motion tends to stay in motion, a body at rest tends to stay at rest


Newton’s First Law200

• Question-- What will a moving object do if no force acts upon it?



• Answer—Continue moving with a constant velocity



• Question-- What will happen to a penguin figurine that starts moving 30 m/s on a frictionless surface



• Answer--The penguin will continue to move at 30 m/s



• Question-- What must happen if a body is to change velocity?



• Answer-- A force must act upon the object



• Question-- What is the name of the property that causes a body to maintain constant motion



• Answer--Inertia


Newton’s Second Law 100

• Express Newton’s second law as an equation


Newton’s Second Law100

• Answer-- F=ma



• If mass one is double mass two, and I want mass one and mass two to accelerate at the same rate, then the force on mass one must be _____ the force on mass two

mass one massone



• Answer-- double



• Question-- If the applied force is 25 N and the mass is 5 kg then what is the acceleration?

5 kg25 N



• Answer-- 5 m/s2

F=m.a

25N=5kg . 5m/s2



• Question-- What is one newton equivalent to in SI units? Use meters, kilograms, and seconds.



• Answer-- 1N=1kg.m/s2



• Question-- What goes on the unlabeled axis if force is constant?

?

time



• Answer-- Velocity

Constant force causes constant acceleration which is shown by a velocity with a constant slope


Newton’s Third Law 100

• Question-- What is Newton’s third law?


Newton’s Third Law100

• Answer--Every action has an equal but opposite reaction



• Question--If I push on the wall with 100 N of force, how hard does the wall push on me in reaction?



• Answer-- 100 N



• Question-- Gravity pushes things down. What is the name of the opposing force that pushes things up?



• Answer-- the normal force



• Question-- When a fish swims, what is pushing it forward? What is the other half of the action/reaction pair?



• Answer--The water pushes the fish forward, in reaction to the fish pushing backward on the water.



• Question-- If the box below is not moving, what is missing from the free body diagram?

FN= ? N

F= -10 N

Ff= 5 N Fpush= ? N



• Answer

Ffriction= 5 N

FN= 10 N

Fpush= -5 N

Fg= -10 N


Horizontal and Vertical Motion 100

• Question-- If a bullet is dropped at the same time that a bullet is shot horizontally and we ignore air resistance, which will hit first?


Horizontal and Vertical Motion100

• Answer--Both will hit at the same time



• Question-- Horizontal motion maintains a constant velocity. What is the equation for distance traveled?



• Answer– d=v.t



• Question-- For vertical motion, velocity increases at a constant rate do to gravity. What is the equation for vertical velocity?



• Answer-- v = a . t

or v = 10 . t



• Question-- For vertical motion, velocity increases at a constant rate do to gravity. What is the equation for vertical distance if the object starts with no vertical velocity?



• Answer-- d = ½ a . t2

or d = 5 . t2



• Question-- When there is both initial velocity and acceleration, what is the combined equation for distance?



• Answer-- d = v0. t + ½ a . t2

v0=initial velocity


Math and Graphs100

• Question-- A cart is pushed on a frictionless surface so that it travels at 2.5 m/s. How far does it travel in 3 seconds?


Math and Graphs100

• Answer-- 7.5 m

d=v . t


Math and Graphs200

• Question-- How far down will a rock fall in 2 seconds if it is thrown horizontally with a speed of 1 m/s?


Math and Graphs200

• Answer-- 20 m

d=½ a . t2

a=gravity=10 m/s2

t=time=2 sec

Horizontal velocity does not effect vertical velocity


Math and Graphs300

• Question-- If my weight is 700 N on Earth, what is my weight on Venus where the force of gravity is 9 m/s2?


Math and Graphs300

• Answer-- 630 N

F=ma

700N=m.10m/s2, m=70kg

F=ma, F=70kg.9m/s2=630N


Math and Graphs400

• Question-- I have a wagon with a mass of 5 kg at rest. I want it to be traveling 8 m/s after 4 seconds of pulling. How much force do I need to pull with?


Math and Graphs400

• Answer-- 10 N

a=v/t=(8m/s)/4s=2m/s2

F=ma=5kg . 2m/s2=10N


Math and Graphs500

• Question-- Is the applied force increasing, decreasing, or constant?

time


Math and Graphs500

• Answer-- The force is increasing

• F=ma, mass is constant and acceleration is increasing, so force is increasing


Final Jeopardy• What is the

acceleration?• What is the

distance traveled?• Is the force

applied increasing, decreasing, or constant?

0 sec 1 sec 2 sec 3 sec

time

0 m/s

6 m/s

4 m/s

2 m/s

velocity


Final Jeopardy

• Acceleration= v/t =(6m/s)/3sec=2m/s2

• distance= area under the graph

area= ½.base.height=½.3s .6m/s=9m

• F=ma, acceleration is constant, so force must be constant

template created by pamela lovin/lrhs, wake county public schools, south carolina welcome to

Documents

pamela lovinlrhs

wake county public schools

south carolinanewtons

law200if mass

mass twomass

double mass

massone template

force acts