Inertia, Momentum and Force Journal

40 Points

Name:__________________________      Date:____________        Period:______

1.    Take a ride in the elevator. What do you feel when you stop on the top floor?  What do you feel when you stop on the bottom floor?  Use the words inertia and momentum to tell why you feel these sensations. 

       Take a blue spring scale on the elevator with a 200g mass attached to it.  What does the scale read when you start up?

       What does the scale read when you start down?

    This paper is your pass to go to the ELEVATOR ONLY.

2.    Get some blocks and a piece of notebook paper.  Stack up the blocks on top of the paper, and try to pull out the paper without knocking over the stack of blocks.  Explain why it can be done.  Use the words inertia and friction.

        What force is pressing the blocks against the paper?___________ 

        What force is acting between the blocks and the paper?______________

        Draw a picture of the blocks on the paper and label the following 4 forces:  friction, inertia, gravity, force of pull on paper.  Attach notebook paper.

3.     Get a 1000g standard weight.  Answer these questions:

        a.    Weight it on the digital scale.

               What is the mass in grams?_____________  What is the mass in Kg?____________

        b.    Weight it with a yellow spring scale.

               What is the mass in grams?___________    What is the weight in N?___________

        c.    Weight it on the triple beam balance.

               What is the mass in grams?___________

        d.    Which is more accurate:  Spring scale or digital scale or triple beam?    

               Which is more precise:   Spring scale or digital scale or triple beam?

        Complete the table below, then check your answer with the spring scales and standard masses.

  Make a graph of the data in the table above.  Use your graph to predict the weight of a .500 Kg mass and a 1 Kg mass.  Show the location of this data point on your chart.   Be sure to select the correct graph type.

5.    Use the web to complete these.  Use the links on the Motion & Force page, under the Inertia, Momentum and Force activities.

    a.   Shoot the cannon into the freight train.  Set momentum to 500.  

          What velocity does the train move at?______________

          Set momentum to 999.  What velocity does the train move at?______________

    b.   Write the law of conservation of momentum below.  Observe Newton's Cradle.  Swing one ball.  Then swing two balls.  Finally swing 3 balls.  

          Explain how its motion obeys the law of conservation of momentum.

6.    Write paragraph of 100 words minimum explaining what the Bash game is, and what concept it teaches.  Use the words inertia, force, friction.  (attach notebook paper)