Motion Vocab
Newton's first law
Newton's second law
Newton's third law
Random
100
Define velocity
An object’s speed in one direction
100
What is Newton's first law?
An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an outside force.
100
What is the equation for summarizing the relationship between force, mass, and, acceleration?
Force = Mass x Acceleration.(can be flipped: Force ÷ Mass = Acceleration)
100
What is Newton's third law?
For every action there is an equal but opposite reaction.
100
What keeps the planets in orbit?
The sun's gravitational pull.
200
Define friction
A force that opposes, or acts against, motion when two surfaces rub against each other.
200
Which has greater mass and inertia?
a: A whale
b: An elephant
c: A bull shark
a: a whale
It's bigger than an elephant and a shark so it has greater inertia.
200
What is Newton's second law?
Mass, force and acceleration are related because when a force is applied on an object it will move the object in the opposite direction that the force is applied. The relationship between force,mass and acceleration is summarized with the formula: Force = Mass x Acceleration.
200
Give an example of the third law.
Two examples are:
200
Why doesn't the sun just pull all the planets to it?
Because of its gravitational pull.
300
Give an example of inertia.
One example out of many could be:
300
Newton's first law is also known as ___________
The law of Inertia
300
Acceleration is always in the direction of the ______
Unbalanced force
300
Forces act in _______
Pairs
300
What is friction?
A force that opposes, or acts against, motion when two surfaces rub against each other.
400
What is the similarity between friction and gravity.
1: They are both forces
2: They both act against moving objects
400
What is the measurement unit of force?
A Newton
400
To increase acceleration what do you do?
Decrease its mass or increase the force.(either is correct)
400
When one object exerts force onto another the other object exerts the same amount of____but in the_________
same amount of force
but in the opposite direction
400
What would happen if the world had no gravity.
It would fly off into space
500
Define the difference between mass and weight.
Mass is the amount of matter in an object and weight the pull of gravity on an object.
500
What is used to measure a Newton?
A spring scale
500
Give an example of a situation where you display the second law.
One situation could be:
When mowing the lawn you have to push to mower with enough force to move it to how fast you want it to go do to its mass.
500
These are Newton's laws of _________
Motion
500
Are gravity and friction connected?
Yes