Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
100
The scientific meaning of energy?
A. anything that cannot be seen
B. the property of something to take up space
C. the ability to cause change
D. anything that has mass
What is
C.. The ability to cause change
100
Speed in a specific direction (a type of vector)
What is velocity
100
What does velocity measure?
A rate of change in position
100
The combination of all forces acting on an object
What is: net force
100
The term used to describe when something is being pulled down by gravity and no other forces are acting on it
What is: Free fall
200
The term used for when you describe a position by comparing it to another object or place?
What is reference point
200
The two measurements needed to determine the speed of an object are___________ & __________
What is:Distance & Time
200
Acceleration in circular motion is known as this
What is: centripetal acceleration
200
A skydiver jumps out of a plane. He falls down at a very fast speed. When he opens his parachute, he slows down. He falls at a safer pace until he lands. What force pulled the skydiver to the ground?
What is: Gravity
200
The reasoning that explains why your weight in orbit would be lower than your weight on the Earth's surface?
A. You would have more mass in orbit and gravity is related to mass.
B. There would be too great a distance between you and Earth, and gravity is related to distance.
C.The gravities of other objects in orbit would contribute to your weight,
What is: B There would be too great a distance between you and Earth, and gravity is related to distace.
300
The formula used for finding average speed?
What is 
300
The arrows below represent the velocity of a car and a bus. What does the length of each arrow represent?
Bus 
A. Direction C. Speed
Car
B. Location D. Velocity
What is: C Speed
300
Which are true about acceleration?
A. acceleration occurs when an object moves in reverse.
B.Acceleration occurs when an object travels in a straight line at a constant speed
C. acceleration can occur when an object changes its speed
D. acceleration is equal to distance divided by time
What is: A. acceleration occurs when an object moves in reverse
C. acceleration can occur when an object changes its speed
300
What describes the tendency of a moving object to continue moving at the same velocity?
What is: Inertia
300
The law of universal gravity describes two factors that affect the force of gravity. These are the two factors
What is: mass and distance
400
The law of conservation of energy
What is: Energy can neither be created nor destroyed; it can only be transformed.
400
Based on evidence in the graph, which object had the greatest speed
What is: The yellowish line
400
In which trial did the cart experience the greatest average acceleration?
| Trial 1 | Trial 2 | Trial 3 | Trial 4 | |
| Time (s) | Speed (m/s) | Speed (m/s) | Speed (m/s) | Speed (m/s) |
| 0 | 2 | 4 | 10 | 1 |
| 1 | 5 | 4 | 9 | 2 |
| 2 | 10 | 4 | 8 | 8 |
| 3 | 15 | 4 | 7 | 20 |
What is:Trial 4
400
When forces on an object produce a net force of 0, the forces are
What is: balanced
400
How does mass affect the force of gravity between two objects?
What is: The gravitational force between two objects increases with the mass of each object. (Objects with greater mass have more attraction.)
500
Which of these is an example of the conversion of elastic potential energy into kinetic potential energy
A. a person running on a track
B. a rubber band that is being stretched to twice its normal length
C. an apple falling from a tree
D. a windup spring making a toy car move across the floor
What is: D. a wind up spring making a toy car move across the floor
500
A moving object collides with a stationary object. Which of the following statements is true according to Newton's third law of motion?
A. Each object exerts a force on the other, and the two forces are proportional to the masses of the objects.
B. Each object exerts a force on the other and the two forces are the same in magnitude and direction
C. Each object exerts a force on the other and the two forces are equal and in opposite directions
D. The moving object exerts a force, but the stationary object does not.
What is: C. Each object exerts a force on the other and the two forces are equal and in opposite directions
500
The following pictures show the positions and directions of a ball at intervals of 1 s. Which picture shows acceleration due to a change in speed?
Motion>
A. =O =O =O =O
Motion <
B. O= O= O= O=
Motion >
C. =O =O =O =O
What is: C
=O =O =O =O
500
The following picture shows forces acting on a sneaker. ( Mrs.S will read options)
Possible Answers:
A. F friction has greater strength than F
B. Ftable and F friction have the same strength, and F and Fgravity have the same strength.
***C. F and Ffriction have equal strength
D. F, Ffriction, Fgravity, and Ftable all have the same strength.
500
How does distance affect gravity?
What is: The gravitational force between 2 objects increases as the distance between their centers decreases.