1. Prep At School | 20 Copy: WDYTN 5 Cut: Lexile levels 5 Board: objectives 10 At Home | x WDYTN

2. Do Now 3 minutes ! Use the graph below to describe the relationship between initial velocity and braking distance.

3. Achieve 3000: Level Set Assessment

4. Agenda Do Now 5 Achieve 3000 5 Physics Talk 10 Reflecting 5 WDYTN? 20 Objectives 1-5 We are learning… Braking distance is dependent on the negative acceleration of the vehicle and reaction time (d = v 2 / 2a) We will be successful when we can… Plan and carry out an experiment to relate braking distance to initial speed Determine braking distance Examine accelerated motion

5. Homework :D 1.Study for Quiz 1-5 Wednesday October 21 st 2.Quiz 1-4 Corrections Thursday October 22 nd 3.WDYTN 1-1 Revisions Friday October 23 rd 4. Achieve 3000 (Age of Revolution) Friday October 23 rd www. scientificmiss.weebly.com TURN IT IN Physics to Go 1-5

6. Braking Distance Problem #5 A skateboarder has an initial velocity of 2 m/s and can brake within 10 m. If initial velocity is… Braking distance will be… New initial velocity New braking distance 2 m/s10 m Doubled (x2) Quadrupled (x4)4 m/s40 m Tripled (x3) Quadrupled (x4) Halved (÷½) Quartered (÷¼)

7. Reflecting (page 87) 5 minutes !

8. WDYTN? 1-5 Braking distance Definition Depends on initial speed (definition) If initial speed…then braking distance… + / - acceleration  direction & change in speed Stopping distance = braking distance + reaction distance What factors must you consider to determine if you will be able to stop in the distance between you and the animal to avoid hitting it? 15 minutes !