Potential and Kinetic Energy
Balanced and Unbalanced Forces
Calculating Speed
Motion Graphs
Inclined Planes
100
This type of energy is known as stored energy and is based on position/height and mass.
What is potential energy?
100
If Mr. Short pushes on a door with 50N of force and Mr. Holley pushes on the opposite side of the door with 50N of force, the door doesn't move.
This is an example of this type of forces.
What are balanced forces?
100
The correct formula for calculating speed.
What is distance divided by time? (s = d/t)
100
Describe what the graph is showing.
What is an object moving at constant speed?
100
This is a straight, slanted surface used to raise an object.
What is an inclined plane?
200
This type of energy is based on motion.
What is kinetic energy?
200
This force can be balanced or unbalanced and is constantly pulling everything towards the center of the Earth.
What is gravity?
200
This is the average speed of an object travelling 24 cm in 3 seconds.
What is 8 cm/s?
200
The graph below tracks the motion of an object.
Describe what is happening with the object's motion between seconds 7 and 8.
What is the object is stopped / not in motion?
200
What is a disadvantage of using an inclined plane to lift a heavy object?
A The object must move a greater distance
B Heavy objects usually take up more space
C Many objects are difficult to tilt straight up
D It takes less effort to move the object
What is A - The object must move a greater distance
300
A ball rolling down a hill is an example of this type of energy.
What is kinetic energy?
300
In gym class, a game of tug of war occurs and one side pulls the other side over, winning the game.
This is an example of these types of forces.
What are unbalanced forces?
300
A vehicle travels 400 miles in 8 hours. This is its average speed.
What is 50 mph?
300
This graph shows the motion of an object.
Which best describes the motion of the object?
a) it is sitting still
b) it is moving at a constant speed
c) it is continually increases its speed
d) it travels at constant speed and suddenly stops
What is d) it travels at constant speed and suddenly stops
300
When you increase the distance of a moving object on an inclined plane . . .
A The Force remains the same
B More force is Needed
C The Distance has no effect
D Less force is needed
What is D - less force is needed
400
A rubber band that is stretched out but not moving is an example of this type of energy.
What is potential energy?
400
Mr. Short leans against a wall with 20N of force and the wall doesn't move. This means the wall is pushing back with this much force.
What is 20N? (The forces are balanced)
400
A cyclist covers a distance of 15 miles in 2 hours. Calculate the average speed without rounding.
What is 7.5 mph? (15/2 = 7.5)
400
Describe the motion of the object in this graph.
What is the object travels away from the starting point, stops, and then returns to the starting position at a faster speed?
400
Workers push a heavy box up an inclined plane and onto a truck.
Which best explains why these workers use an inclined plane?
A It keeps their clothing clean
B It makes the boxes weight less
C It makes the work easier
D It keeps the box form breaking
What is C - It makes the work easier
500
These are the 2 types of potential energy we discussed in class.
What are gravitational and elastic potential energy?
500
The net force on this object.
What is 15N?
500
Based on the data table below, this person went fastest.
What is Sally?
(She traveled twice the distance that Alonzo did in the same amount of time, which means her speed is double his.)
500
Jane made this graph of the distance her family traveled on a trip.
This is their average speed for the first 2 hours of the trip.
What is 50 mph? (traveled at a constant speed of 50 mph for the first 2 hours.
500
All of the following are examples of inclined planes EXCEPT.
A Uphill Trail
B Table
C Slide
D Escalator
What is B - table?