OBJ: Given lab SWBAT determine the variables (mass?, size?, ramp height?) that effect the distance a ball is able to move a stationary cup with 70% accuracy.

DN: Hand-in SVQ2 Quiz scantronReview Procedures, Graphing

ACT: Complete Procedures, Graphing and all Questions

HW: Complete Ball and Ramp Lab write-up (lab due Tomorrow; BRL lab quiz Tuesday); Energy Exam, Tuesday, January 6; Return W & C Textbooks, Dec 18,19.

Procedure A

Procedure B

Books

Measure from the BACK of the cup.

To answer the questions, you could say:

Ball traveled farther; less

Ball moved faster; slower

Ball weighs more; less

The cup moved farther; less

Kinetic energy increases; decreases

Potential energy increases; decreases

Remember

max. potential energykinetic energy = 0

decreasing potential energy; increasingkinetic energy

potential energy = 0max. kinetic energy

Work done

Work = Force x Distance

P.E.= weight (mass) x height

height

K.E. = ½ mass x velocity²

mass

mass

Remove with smart board off

C. Wisnowski has ramps and metal balls