Gravity & Friction
First Law
Second Law
Calculations
100
This is the difference between "weight" and "mass."
What is that weight depends on the force of gravity, but mass is the amount of matter in an object?
100
In one word, what does Newton's first law of motion describe?
What is "inertia?"
100
This is Newton's Second Law summarized in one word.
What is "acceleration"?
100
This is the force it takes to accelerate an 80 kg object at 2.0 m/s2.
What is 160 N?
200
This is the relationship between the weight of an object and the amount of friction to push it along the floor
What is direct
200
What is the relationship between mass and inertia
What is direct?
200
This is the formula for Newton's Second Law.
What is Force = Mass x Acceleration?
200
This is the acceleration of a seventy kg object pushed with a force of 140 Newtons.
What is 2.0 m/s2?
300
This is the acceleration due to gravity
What is 9.8 m/s^2?
300
If the mass of an object increases, the inertia __________
increases
300
These are the base units that are combined to make one "Newton."
What is a kilogram meter / second squared?
300
This is the force exerted by gravity on an 8 kg object.
What is 78.4 Newtons?
400
This type of friction has the most resistance to motionn
What is static friction?
400
If the net force on an object is zero, then the motion of the object is __________
What is constant
400
If you triple the size of the force in a second law problem, but keep the mass the same, this happens to the size of the acceleration.
What is that it triples?
400
Find the missing value. Force = 500 N, acceleration = 5 m/s^2
What is 50 kg?
500
These are the four types of friction
What are fluid friction, sliding friction, fluid and static friction?
500
When forces are balanced the net force is _________
zero
500
The relationship between mass and acceleration
What is indirect
500
What is the mass of an object that weighs 490 N
What is 50 kg
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