1/31

Objective:  SWBAT review for Friday's test.  (Yes it's Friday, not Thursday.)

Warm Up:  Labs turned in or emailed?
A block of mass 1.6 kg is moving to the right with a speed of 4.0 m/s on a frictionless track when it collides with a second block of mass 2.0 kg, attached to a spring.  The second block is moving to the left at a speed of 2.5 m/s.  The spring's constant is 600 N/m.  At the instant the first block is moving with a speed of 3.0 m/s to the right, determine the velocity of block 2.

1/30

Objective:  SWBAT begin to review linear momentum.

Warm Up:  Pick up one review packet.  Answer Question # 1.

Did you turn in your hover puck results and your momentum virtual lab? 

1/27

Yesterday we collided hoover pucks together and recorded the collisions with the flip cameras.

Today you will analyze the recordings to determine if the momentum was conserved in a 2-D collision.

What you will turn in to me is your calculation of the initial momentum of the moving puck, the calculations of the final momenta of both pucks and an error analysis showing percent difference.

1/25

Objective:  Solve momentum problems in one and two dimensions.

Warm Up:  A 0.5 kg object traveling 5 m/s to the right along the x -axis strikes (in an elastic collision) a 0.75 kg object that is stationary sitting ever so slightly above the x axis.  The first object moves off immediately afterward at 3 m/s at an angle of 30 degrees below the x axis.  What is the speed and direction of the other object immediately after the collision?

1/23

Objective:  SWBAT virtually determine the change of momentum of a cart on an air track

Warm Up:  Split up into groups of 3 and go to

http://electron9.phys.utk.edu/phys135d/laboratories/Lab7.htm .  Read the directions and watch the first video (it is only a few seconds long).

1/20

Yesterday we worked on center of mass.  Today we will visit momentum.

Objective:  SWBAT understand the conservation of linear momentum.

Warm Up: What is the x coordinate of the center of mass of yesterday's right triangle?

1/11

Data Studio Software is still not working on the computer system, so we will finish the Conservation of Energy lab next week.

Objective:  SWBAT review for tomorrow's test.

Warm Up:  Get out your test review packet.  Pick up two handouts.
A 5 g particle traveling 2 m/s to the left collides with a 10 g particle that is at rest.  They stick together and move off at what velocity?

1/4

Objective:  SWBAT understand the relationship between potential energy and work done on or by a system.

Warm Up:  What is the difference between a conservative force and a nonconservative force?