25 terms

# Conceptual Physics - Chapter 5: Newton's 2nd Law

Anki Set (use w/ Quizlet set): https://ankiweb.net/shared/info/20599765

#### Terms in this set (...)

Mass
The amount of matter that an object is made of
Force
A push or pull on an object
Net Force
The sum or difference of all of forces acting on an object.
acceleration
When an object is at its terminal velocity, it has no ____.
terminal velocity
When an object in freefall gets to its maximum speed. It has no acceleration.
pressure
the force that an object covers over how much area it's covering
object, mass, acceleration
f = ma means that the force of ____ = its ____ * its current ____.
This is Newton's Second Law in a nutshell.
force, mass
The "g"-value can be calculated by dividing ___ over ___.
slower, friction
Air resistance will make a heavier object move ____ in freefall due to its increased _____. This is an inertial pulling force (opposite direction) on an object.
frictional force
an inertial pulling force (opposite direction) on an object
normal force
A force that is put on a stable object to support it.
air resistance
A friction force that is being pushed/pulled on something moving in freefall (in the air)
g-value
The gravitational pull expressed as a number. (9.8m/s^2 or 10m/s^2)
Neither
In space or in a vaccuum (g = 0), will a feather, a bowling ball, or neither hit the ground first?
Bowling ball
On Earth (g = 0), will a feather, a bowling ball, or neither hit the ground first?
normal force
What force is this an example of?

(Credit: Unsplash https://www.pexels.com/photo/gray-book-on-brown-wooden-table-89830/)
applied force
A type of force that is put on an object by something (external force moving the box) -- a push, a pull, or a drag.

(own work)
3, 2, 3
The net force on this box horizontally is: __ Newtons.
Its horizontal frictional force is __ Newtons.
Its vertical normal force is __ Newtons.

(Credit: massec.wikispaces.com/file/view/Force_Box_1.GIF/250222004/Force_Box_1.GIF
fair use for educational purposes)
frictional force, normal/support force, gravitational force, applied force
Name all 4 forces on this picture.
1, 2, 3, 4 = ?

(own work)
-4m/s^2
A parachuter is falling down. For point 1, what is the acceleration?
0.6m/s^2
A parachuter is falling down. For point 2, what is the acceleration?
1m/s^2
A parachuter is falling down. For point 3, what is the acceleration?
3
A parachuter is falling down. Which point is the terminal velocity?
zero
NOTE: If a person were to put (apply) less force on pushing the box than its friction, its net force would remain at ____.
greater than zero
NOTE: If the person were to push a greater force than its friction value, its net force would be ____ ____ ____.