Forces
The unit we use to represent force is __________.
NEWTONS!
Newton's FIRST LAW is nicknamed what?
It's nicknamed: The Law of Inertia
Define control variables.
Things that remain the same (or constant) in an experiment.
p = m x v
momentum = mass x velocity
What is energy?
the ability to do work
2 guys pick up a couch and both have 20 N force going towards the right. What is the total Net Force?
40 N
A body in motion stays in motion or a body in rest stays at rest, unless acted upon by a _________.
Velocity = speed and ____________ of an object.
What are two ways to increase momentum?
You can increase the mass or increase the velocity of the object
Potential Energy
The __________ force is the force that surfaces exert to prevent solid objects from passing through each other.
NORMAL
What is the formula for Newton's SECOND LAW?
F = m x a
The three parts of a rocket are...
body (frame), nose and fins
SUPERMAN WINS!
What are the four types of potential energy!
chemical, gravitational, nuclear, elastic
You're pushing a stationary car forward with 3 friends at 275 N force. The stationary car has a force of 560 N. What is the total net force?
285 N
Which one of NEWTON'S LAWS is this: For every action there is an equal and opposite reaction?
Newton's THIRD LAW
distance divided by time = _______________?
SPEED!
Whose momentum is more powerful? The planet Venus or the planet Uranus?
URANUS WINS!
mechanical, thermal, electric, sound, radiant (light)
A box slows down due to kinetic friction. Name at least 2 forces acting upon the box.
Ffriction , Fgravity , Fnormal , Fpush
Which one of NEWTON'S LAWS is this: a person shakes a tree vigorously, and the leaves fall down.
Newton's FIRST LAW. Objects stay at rest (leaves) unless acted upon by a force (person shaking).
The force that is transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends.
Tension Force
Define the Law of Conservation of Momentum
Momentum cannot be created or destroyed, only transformed.
Define the Law of Conservation of Energy
Energy cannot be created or destroyed, but it can be transferred and transformed.