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……