Force
Gravity is NOT force. True or False?
False - gravity IS a force.
On top of a roller coaster, which energy do you have?
Potential energy
A car travels 300 km in 6 hours. What is the average speed of the car?
Speed = distance ÷ time
S = 300 km ÷ 6 hours
Speed = 50 km/hr
The rate at which velocity (direction or speed) changes over time
Acceleration
Graph what acceleration looks like on a distance/time graph. What are the two types of graphs name?
Someone comes up to the board and draws them out.
1)Acceleration 2)Deceleration
When two equal forces act on an object in opposite direcetion.
Balanced Forces
the __________ an object moves, the more kinetic energy it has.
Faster.
What is the speed of a jet plane that flies 8100 km in 9 hours?
Speed = distance ÷ time
S = 8100 km ÷ 9 hours
Speed = 900 km/hr
How fast an object is traveling?
Speed.
How do unbalanced forces cause change?
1)Position
2)Direction
3)Speed
What type of force slows down a skateboarder when he puts his foot down to brake?
Friction
If a ball is standing still it has....
Potential Energy.
*Even SCORE*
A storm is moving toward your house at a speed of 20km/hr. It is now 60 km away from your house. In what time will the storm reach your house?
Time = distance ÷ speed
20 km/hr = 60 km ÷ time
Time = 3 hr
Units for time (minutes, seconds, hours)
Attraction between all matter
Gravity.
What is acceleration?
1)Increase in speed
2) Decrease in speed
3)Change in direction
If an equal force acts on a pencil and a text books, which one will have GREATER acceleration.
Pencil
What is Energy?
The ability to cause change
A runner can run at a speed of 4 km/hr in 2 hours. What distance will she cover in that time?
Distance = speed x time
4 km/hr = distance ÷ 2
Distance = 8 km
What is speed?
The rate at which someone or something is able to move or operate.
At dinner you got mad and threw your burrito at a speed of 4 m/s. It flies for 18 seconds through the air. How much distance did the burrito cover?
Distance = speed x time
Distance = 4 m/s x 18 s
Distance = 72 m
If I am slowing down in the car, is that acceleration?
(Triple Points)
YES.
Aceleration
1) Increase in speed.
2)Decrease in speed
3) Change in direction
What is the opposite energy of Kinetic energy?
Potential energy.
A truck travels down the highway at a speed of 80 km/hr. How long does the trip last if the truck covered 2200 km?
Time= distance ÷ speed
80 km/hr = 2000 km ÷ Time
Time = 25 hours
Units for time (minutes, seconds, hours)
1)My weight would stay the same if I traveled to a different planet. True or False?
2)What stays the same? Explain why! (Double Points)
1)False - your weight would CHANGE!
2)Mass will be the same on a different parent.
Evidence that a chemical change has occurred might include...
Color Change
Odor CHange
Formation of a Precipitate
Gas formed (bubble)