Vocabulary
The force that pulls all objects towards the Earth
Gravity
What is on the x-axis in a motion graph?
Time
Hitting a baseball is an example of what type of force?
Push
Riding your bike on sand is an example of what? (hint: why are you slower in sand)
Friction
What is the difference between mass and weight?
Weight is dependent on gravity, mass doesn't change
Force that slows down moving objects
Friction
What is on the y-axis in a motion graph?
Distance
Zipping up a coat is an example of what?
Pull force
If you travel 100 km in 2 hour what is your average speed
50 km/h
If I were to take a mirror and break into 10 pieces, what would change about the mass?
Nothing. The mass would be the same. If I put the mirror on a scale before I broke it and after, it would weight the same.
The rate at which someone or something is able to move
Speed
A straight line in a distance-time graph represents what?
Constant speed
Two teams pulling on a rope in Tug-of-war and the rope is not moving in either direction. This is an example of what?
Balanced Forces
What is the formula for speed
Distance / Time
Explain how the relationship of weight and speed ratio in our CO2 Car races
As the weight of the cars went down, speeds went up
The position an object starts at before force is applied.
Fixed point or Starting point
The object is increasing in speed
My mass would change if I went to a different planet. True or False
False
Both Jayda and James want McDonalds. Jayda gets a 50 ft head start. Jayda is travelling at 35 Km/h, and James is travelling at 45 Km/h. Draw or explain what the motion graph would look like.
Eventually James line would catch up to Jayda's and they would intersect, because he is travelling at a faster rate.
If Kelly and Kendall are both trying to race to push a bookcase across the room. How can they make the bookcase go faster? (Use science terms)
By taking books out of the bookcase, they can decrease the mass, making it easier to push.
A change in position is
Motion or distance
In a motion graph a horizontal line means what?
The object was not moving, or the object was at rest
Forces that cause change in the motion of an object
Unbalanced forces
What keeps a cup on a flat table? (2 things)
1) Gravity pulling down on the cup
2) The force from the table pushing on the cup.
Three bowling balls are rolling down a hill. One is 10 pounds. One is 12 pounds. One is 14 pounds. Which one is hardest to stop?
The 14 pound bowling ball. It has more mass, therefore it will require more force to stop it.