CHAPTER 2 correlates

 The main topic of this chapter is __________, which is a change in an object’s position relative to a ___________ point.

 The main topic of this chapter is MOTION, which is a change in an object’s position relative to a ___________ point.

 The main topic of this chapter is MOTION, which is a change in an object’s position relative to a REFERENCE point.

3 formulas we will be using

-- speed

3 formulas we will be using -- speed -- momentum

3 formulas we will be using -- speed -- momentum -- acceleration

 SPEED = distance divided by __________

 SPEED = distance divided by TIME

 50 m/s  200 mi/hr  20 cm/min

 Instantaneous speed is speed in an ___________ of time WHILE average speed is the _____________ of you r speed over a trip

 Instantaneous speed is speed in an INSTANT of time WHILE average speed is the _____________ of you r speed over a trip

 Instantaneous speed is speed in an INSTANT of time WHILE average speed is the AVERAGE of you r speed over a trip

 For example, you may have ______________ on your brakes when a dog runs in front of your car ….so slower speed at that moment……

 For example, you may have SLAMMED on your brakes when a dog runs in front of your car ….so slower speed at that moment……(THAT INSTANT of TIME)

 Another example would be if you ____________ when the stoplight turned green.

 Another example would be if you HIT THE GAS when the stoplight turned green.

Race Number Average Speed  What is the average speed of all the races?

Race Number Average Speed  What is the average speed of all the races? = /4 = 135

 Dividing total distance by total time calculates average speed.  SO……..If the whole trip totaled 30 miles and took 3 minutes to go the 30 miles…..then (30 miles / 3 minutes) = 10 miles/minute

CLASS  Please turn to your partner and tell them quickly --MAIN TOPIC OF UNIT -- 3 types of formulas you will see --HOW TO FIND Speed / Instantaneous speed/Average speed NOW YOUR PARTNER EXPLAINS……

 Momentum is based on _______ and _________ of an object.

 Momentum is based on MASS and _________ of an object.

 Momentum is based on MASS and VELOCITY of an object.

 If the mass of an object is small, for the object to have a lot of momentum, it must be traveling relatively __________

 If the mass of an object is small, for the object to have a lot of momentum, it must be traveling relatively FAST

 If the object is traveling very slowly, for it to have a lot of momentum, its mass must be relatively __________

 If the object is traveling very slowly, for it to have a lot of momentum, its mass must be relatively LARGE

 Acceleration is when an object SPEED UP or _____________ or changes _______________  When you speed up = acceleration  When you slow down = acceleration  When you change direction = acceleration  A carousel is an example of acceleration

 Acceleration is when an object SPEED UP or SLOWS DOWN or changes _______________  When you speed up = acceleration  When you slow down = acceleration  When you change direction = acceleration  A carousel is an example of acceleration

 Acceleration is when an object SPEED UP or SLOWS DOWN or changes DIRECTION  When you speed up = acceleration  When you slow down = acceleration  When you change direction = acceleration  A carousel is an example of acceleration

 Acceleration is when an object SPEED UP or SLOWS DOWN or changes DIRECTION  When you speed up = acceleration (positive)

 Acceleration is when an object SPEED UP or SLOWS DOWN or changes DIRECTION  When you speed up = acceleration (positive)  When you slow down = acceleration (negative)

 Acceleration is when an object SPEED UP or SLOWS DOWN or changes DIRECTION  When you speed up = acceleration (positive)  When you slow down = acceleration (negative)  When you change direction = acceleration

CLASS  Please turn to your partner and tell them quickly --ABOUT MOMENTUM --Positive acceleration -- Negative Acceleration NOW YOUR PARTNER EXPLAINS……

 ________________ Acceleration is acceleration towards the _____________ of a curved or circular path

 CENTRIPETAL Acceleration is acceleration towards the _____________ of a curved or circular path

 CENTRIPETAL Acceleration is acceleration towards the CENTER of a curved or circular path

 Speed + direction = ______________________

 Speed + direction = VELOCITY

 Velocity is speed plus a direction.  50 mi/hr is speed of a car  5 0 mi/hr going North is the velocity of a car.

 If I give you 50 m/s and 50 m/s going North……the number is the same……….velocity just adds the _______________

 If I give you 50 m/s and 50 m/s going North……the number is the same……….velocity just adds the DIRECTION

CLASS  Please turn to your partner and tell them quickly --Centripetal Acceleration --What speed + direction is -- Why is the number the same in velocity and speed NOW YOUR PARTNER EXPLAINS……

 Horizontal Vertical

 Projectiles are _____________________ _____________________

 Projectiles are objects thrown/shot in air

 Displacement is the ______________ and ________________ of the object’s change in ____________

 Displacement is the DISTANCE and ________________ of the object’s change in ____________

 Displacement is the DISTANCE and DIRECTION of the object’s change in ____________

 Displacement is the DISTANCE and DIRECTION of the object’s change in POSITION

CLASS  Please turn to your partner and tell them quickly --Projectiles --Horizontal vs vertical -- Displacement NOW YOUR PARTNER EXPLAINS……