Graphs
What does a straight, rising line on a distance/time graph tell you about the object’s motion?
/
Constant speed
How fast an object is traveling
Speed
Define force
A push or pull
This force opposes the motion of a car's tires against the road, helping it to stop when brakes are applied.
What is friction?
While the Earth orbits the Sun, this object orbits the Earth and controls our ocean tides.
What is the Moon?
What does a flat, horizontal line on a distance/time graph tell you about the object?
_________
There is no motion
Bonus points +$100 for using the word: stationary
Speed of an object in a certain direction
Velocity
in Newtons
When a car accelerates forward, the engine applies this type of force to the car's wheels.
What is applied force?
Ms. Frizzle says this is the amount of matter in an object, and it doesn’t change no matter where you go in the universe.
What is mass?
On a speed/time graph, what does a straight, rising line show about the object's acceleration?
/
Attraction between all matter
Gravity
Tim pushes a box with 10N east and Mrs. Waters pushes the box with 5N west. Explain the motion of the box
The box will travel with a force of 5N east
(must include 5 N and E = 100 pts each)
How do you calculate speed? Think of acceleration graphs.
distance ÷ time
On a field trip to the Moon, the students notice this measurement is 1/6 of what it is on Earth, but their mass stays the same!
What is weight?
What does a flat, horizontal line above zero on a speed/time graph mean about the object's motion?
___________
The object is traveling at a constant speed
The rate at which velocity (direction or speed) changes over time
Acceleration
an UPWARD force exerted on an object in FLUIDS
must say upward (200) and a synonym to fluids (water, liquids, etc.)
If a car is moving uphill at 50MPH, what must be true about the forces acting on the car?
The forces acting on the car are less than the force of the car (it's thrust or engine) causing the forces to be unbalanced allowing the car to move uphill.
Explain why someone would think only large objects like the Earth/moon/sun have a gravitational pull
while all objects have a gravitational pull, the earth and moon and sun have a much greater mass so the gravitational pull is much more significant or noticeable.
(it is important that the answer notes that everything has a gravitational pull, and includes that large masses make us see the gravitational pull more easily)
What does a flat, horizontal line on the x-axis tell you when found on a speed/time graph?
_____________ x -axis
Name 3 forces acting upon a skateboarder skating downhill
frictional force, gravitational pull, applied force
Is a car that is driving at a constant speed of 50MPH east on the highway accelerating? Why or why not?
The car is not accelerating because there is not a change in speed or direction. Or you could say the forces are balanced.
Explanation must be there for full points.
they would fall at the same rate/speed
Bonus $200 if the answer includes 9.8m/s^2 (squared)