Today in your notebooks Left side items Right side items Simple machines Introduction to forces Newton’s laws chart Newton’s laws Unbalanced forces brainpop Unbalanced forces simulation In Question w.o. 12.3.12 BLANK Net force diagrams Net force notes Balancing net force Calculating net force Bill Nye Friction Friction notes Bill Nye magnetism Magnetism notes How to make a solenoid Electromagnet notes In question 1.15.13 Speed and velocity problems Speed and velocity notes Acceleration BP, acc. HW Acceleration notes

Acceleration (Right) W. is acceleration? How do you calculate acc.? W. is the unit for acc.? W. is the relationship btw force/mass/and acc.? Acc.- the change in velocity over time (speed up, slow down, change direction) 2) a = (sf-si)/t If the number is negative you are slowing down*** 3) m/s2 (meters per second per second). How velocity (m/s) changes over time (s) 4) F= m *a m = F/a a = f/m

BRAIN [POP] Please watch the video through 1 time WITHOUT WRITING. We will watch two more times and then fill out the notes

1. a = (sf-si)/t sf = 10m/s si=2m/s t= 2s Calculate acceleration 2 1. a = (sf-si)/t sf = 10m/s si=2m/s t= 2s Calculate acceleration 2. a = (sf-si)/t sf = 20m/s si=4m/s t= 8s Calculate acceleration

LAB Where our data could have been damaged…

Exit slip The formula for speed = time/distance True b. false 2. Velocity is distance and direction 3. Acceleration is how speed changes over time a. True b. false 4. Distance = 10m time = 10s Calculate speed 5. a = (sf-si)/t sf = 10m/s si=4m/s t= 2s Calculate acceleration *** MUST USE CORRECT UNITS