Potential and Kinetic Energy
Balanced and Unbalanced Forces
Speed
Motion Graphs
100
The energy related to motion
What is Kinetic Energy?
100
A.
B.
Which of the following conclusions can the student make from the investigation about how to safely move the cart?
1. As the height of the ramp increases, the amount of force needed increases.
2. As the length of the ramp increases, the amount of force needed decreases.
3. As the height of the ramp increases, the amount of force needed decreases.
2. As the length of the ramp increases, the amount of force needed decreases.
100
What is the formula of Speed
What is
S= Distance/Time
100
Analyze the graphs. Then describe each graphs motion.
What is
Graph A- objet is not moving
Graph B- object is traveling at a constant pace; constant speed
Graph C- object is accelerating; getting faster
200
Stored energy in an object
What is Potential Energy?
200
Unequal forces on an object that may result in a change in position, direction, or motion
What is Unbalanced Force?
200
Observe the inclined plane and ball in the above image. If the ball rolls down the inclined plane in the direction of the arrow in 2.42 seconds, what is the average speed of the ball during the roll?
What is 2.07 m/s
200
Draw a motion graph for the scenario given.
Include titles for the X and Y axis and origin.A dog walks away from home at a constant pace for 20 minutes. Next, he stops for a 10 minute nap under a tree. Finally, he walks back home at a constant pace and comes to a stop.
What is
300
At what point would the roller coster have greatest potential energy?
What is point 3?
300
equal and opposite forces on an object that result in no change in position, direction, or motion
What is Balanced Forces?
300
A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?
What is 7 km/hr
300
The graph below shows the motion of a car.
Describe the motion of the car traveling?
The car travels at a constant speed, increases its speed over, and then travels at a constant speed for.
400
Which point would kinetic energy be the greatest?
What is point 5?
400
True or False
An unbalanced force acting on an object changes its speed or direction of motion, or both.
True
400
What is the average speed of the toy car in the investigation?
A 0.25 m/s
B 4.0 m/s
C 5.0 m/s
What is 4.0 m/s
400
The graph below shows the position of a moving object from 0 to 5 seconds. Describe the motion of the object.
The moving object is accelerating and changing its speed throughout the measurement.
500
Both Birds have a mass of 120 grams and are flying at 80 km/hr. Bird R is flying 2.0 km above the ground, and Bird Q is flying 2.5 km above the ground. Describe the Energy of the two birds.
Bird Q and Bird R have the same kinetic energy but different potential energy.
500
According to the information and graph above, what unbalanced force is affecting the steel ball the most and how is it affecting the ball's motion?
Friction with the track is the greatest unbalanced force, and it is causing the ball to slow down.
Friction with the air is the greatest unbalanced force, and it is causing the ball to slow down
Gravity is the greatest unbalanced force, and it is causing the ball to speed up.
3. Gravity is the greatest unbalanced force, and it is causing the ball to speed up.
500
During Christmas break I will be traveling 1400 miles from Crane, Tx to Modesto, Ca. It will take about 22 hours to get there.What will be the average speed during our travels?
What is 63.6 mi/hr
500
Analyze the graph and make up a scenario of a dog who traveled a distance over a period of time.
a. dog at rest
b. dog traveling at a constant speed
c. dog at rest