Forces and Pulls
Isaac Newton
Laws
Waves
Random
100
Which diagram shows balanced forces?
The middle one.
100
Pulling a tablecloth quickly from under dishes without disturbing them demonstrates which law?
Newton's First Law.
100
What is Newton's FIRST law of motion?
Inertia
100
What do waves carry from one place to another?
Energy
100
Which requires more force to move: a heavy object or a light object?
The heavy object.
200
Which object would require more force to move at the same acceleration?
The car
200
A softball has a mass of 2 kg and accelerates at 5 m/s². How much force is applied?
10 N
200
Which formula is used to calculate force?
F = ma
200
What is the distance between two wave crests called?
Wavelength
200
What is the distance from one crest to the next crest called?
Wavelength
300
What is the net force if an object experiences 6 N right, 12 N right, and 12 N left?
6 N
300
What does the "N" stand for when measuring force?
Newton
300
If forces are balanced, will an object speed up?
No
300
What is the top of a wave called?
Crest
300
In a sound wave, what do we call the area where particles are squished closely together?
Compression
400
A car moving to the right has a net force of 2,000 N to the right. What will happen?
The car will speed up toward the right?
400
What do we call a push or a pull?
A force
400
This is Newton's SECOND Law of Motion:
Force equals mass times acceleration
F=ma
400
What is the bottom of a wave called?
Trough
400
In a sound wave, what do we call the area where particles are spread farther apart?
Rarefaction
500
Two boxes are pushed with the same force. One has a mass of 2 kg and the other has a mass of 10 kg. Which accelerates more?
The small box.
500
If two forces are equal and opposite, what is the net force?
0 N
500
What is Isaac Newton's THIRD Law of motion?
Law of Action and Reaction
500
What do we call the height of a wave from the middle line to the crest?
Amplitude
500
If a wave has a long wavelength, what kind of frequency does it have?
Low frequency