Motion
Speed with a direction
What is velocity?
The force that holds us to the Earth and is dependent on the mass of the object.
What is gravity?
The term for the tendency for objects to resist changes in their state of motion.
What is inertia
An object with more mass requires more of this to accelerate
What is force
10 m/s2 is an example of what?
What is acceleration?
True or false: forces always come in pairs
What is true
What is Newton's Second Law?
F = ma or Force = Mass x Acceleration
An NFL player tackles a child. Which experiences the greater force?
What is neither, they experience the same force
A net force causes this
What is acceleration
The measurement of the force of gravity on an object
What is weight?
What is Newton's Third Law?
For every action there is an equal and opposite reaction.
You are thrown off the front of a 4 wheeler when it runs into a fence. This is an example of which law of motion?
What is Newton's First Law?
In an elevator accelerating down, which force is greater: gravity or tension?
What is gravity
Sketch the free body diagram of a soccer ball rolling on the ground to the right, where there is friction.
Gravity points down, normal force points up, friction points left
What is Newton's first law?
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
You drop your pencil off of the desk and the Earth's gravity pulls the pencil down. What is the equal and opposite force?
What is the pencil's gravity pulls the Earth up
The velocity of a ball pulled down by the Earth after 2 seconds.
What is -19.6 m/s
The four fundamental forces
What is gravity, electromagnetic, strong nuclear, and weak nuclear
There is a glider attached to a hanging mass via a string over a pulley. What is the force equation for the hanging mass?
Fnet = Fg + FT
A baseball hit with a wooden bat goes farther than a baseball hit with a plastic bat. This is an example of which law of motion?
What is Newton's second law?