Balanced & Unbalanced Forces
Average Speed/Motion Graphs
Conduction, Convection, Radiation
Newton's 3 Laws
Waves
100
What is the difference between a balanced and unbalanced force?
What is...
A balanced force is when an object has no motion or is going at a constant rate. Unbalanced forces cause objects to move.
100
What does constant speed & Rest look like on motion graph?
Answer shown with arm.
100
You feel the heat from a fireplace while sitting several feet away.
What is Radiation
100
The same force is applied separately to two objects, Object A and Object B. Object B has twice the mass of Object A. Analyze the acceleration of Object B compared to Object A?
A. Object B’s acceleration is half that of Object A.
B. Object B’s acceleration is twice that of Object A.
C.Object B’s acceleration is one-fourth that of Object A.
A. Object B’s acceleration is half that of Object A.
100
What occurs to the wave has the wavelength increases?
The frequency getting lower
200
>50 and >70
What is the total net force and direction of object's motion?
What is... The total net force is 120 Newtons to the right.
200
Kimberly was walking home from school when, a dog started to chase her. What would the motion graph look like?
Accelerating
200
Warm air rises to the ceiling of a room while cool air sinks.
Convection
200
All falling objects accelerate at a rate of approximately 9.8 m/s2 . If a skydiver has a mass of 60.0 kg, what is the force acting on her just before she opens her parachute?
A. 3.06 N
B. 6.12 N
C. 588 N
D. 5,762 N
C. 588 N
200
What happens as you move towards gamma rays on the ems?
The wave will get shorter, frequency will begin to increase, temperature will get hotter, and it becomes more dangerous.
300
When two unequal forces act in opposite directions on a moving object, the object will...
A) absorb the forces
B) come to an immediate stop
C) continue to move in the same direction
D) move in the same direction as the larger force
What is ... D) move in the same direction as the larger force.
300
What is occuring at 2-3 seconds?
What is.... Going back to origin
300
What is the kinetic energy for something cold versus something hot?
Colder = Less Kinetic Energy
Hotter= More Kinetic Energy
300
An index card is placed across the top of a drinking glass. A coin is then placed on top of the index card. A student quickly flicks the card sideways off the glass. Which scientific law best explains why the coin falls into the glass rather than moving to the side with the index card?
A. Newton’s first law of motion
B. Newton’s second law of motion
C. Newton’s third law of motion
D. law of conservation of energy
A. Newton’s first law of motion
300
Compare and contrast these two waves?
Wave at the top = Longer wave low frequency
Wave at the bottom = Shorter wave higher frequency
400
Four forces are acting on a box.
40N Down V
20N Right > < 30N Left
10 N Up ^
The box will increase in speed going ...
A) downward and to the left
B) downward and to the right
C) Upward and to the left
D) Upward and to the right
What is.... A downward and to the left
400
What occuring at 3-4 and 5-7?
3-4= rest
5-7 = rest
400
A solid, liquid, or gas... which will have the most kinetic and which will have the least?
Solid=Less Kinetic Energy
Gas= More Kinetic Energy
400
Which statements describe how Newton’s third law of motion is used to describe what happens when the meteor and the spacecraft collide? Circle TWO correct answers.
A. The accelerations of the meteor and spacecraft will be equal to each other.
B. The forces exerted by the meteor and the spacecraft on each other will be of equal strength.
C. The forces of the meteor and spacecraft will be exerted on each other in the same direction.
D. The forces of the meteor and spacecraft will be exerted on each other in opposite directions.
B. The forces exerted by the meteor and the spacecraft on each other will be of equal strength.
D. The forces of the meteor and spacecraft will be exerted on each other in opposite directions.
400
Using the numbers and the picture what is the amplitude of this wave? 
The amplitude is 2
500
If two students were pushing the box that has a mass of 12kg, what is the acceleration of the box?
20N ><50
what is 2.5m/s2
500
a jogger runs 200m in 60 seconds then runs 1600m in 600 seconds.Finnally sprints 200m in 20 seconds. What is the jogger's average speed?
A=Td/Tt
2,000m/680s = 2.94 m/s
500
What is the difference between thermal energy and temperature?
Thermal energy is any type of heat energy
Temperature is how much average kinetic energy an object has
500
A-The ball does not move until the girl kicks the ball.
B-The ball moves in the opposite direction from which the girl kicked the ball.
C-The ball accelerates quickly because it is light and the girl kicked it with a large force
Which law is for each scenario?
A=1
B=3
C=2
500
Which wave has an amplitude of 1 & a frequency of 1hz in 0.2 sec?
Wave #4