Physics 1
What is a push or a pull that is measured in Newtons?
force
what is the total of all forces on an object called?
net force
What is being described?
1.5 m/s
speed
True of False?
Slowing down is acceleration?
true
any type of change in velocity
An object at rest stays at rest, and an object in motion stays in motion, unless an unbalanced force acts on it
What states this
Newton's First Law
What type of forces do not change the motion of an object?
balanced
For a force to be balanced, what does the net force have to equal?
0 N
What is being described?
80 mph west
velocity
How do you calculate average speed?
total distance divided by total time
As mass increases, acceleration decreases.
As force increases, acceleration increases.
What states this?
Newton's Second Law
what type of force does change to motion of an object?
unbalanced
Little John is pulling a box with a force of 312 N east. Suzy is pulling the box with 112 N west. What is the net force?
200 N East
What is velocity?
the speed and direction traveled
On a speed graph, what does the "rise" equal?
distance
Every action force has an equal and opposite reaction force
What states this?
Newton's Third Law
What is an unbalanced force that moves in the opposite direction of the motion and slows an object down
friction
Jennifer pulled her little sister, Kelly, in her red wagon as they walked to their neighbor’s house. Jennifer pulled with a force of 15N east. Their friend next door wanted to join them, so she pushed the wagon with a force of 10N in the same direction. What is the net force?
25 N east
What is acceleration?
when any part of you velocity changes
On a speed graph, what does the "run" equal?
time
What is the equation that explains Newton's 2nd Law?
F=ma
When is equilibrium reached?
when forces are balanced
What unit measures force?
Newtons
distance traveled over a period of time (d/t)
You are your family went on vacation to Disney World. You traveled a constant speed of 60 mph the entire trip. Disney World is 900 miles away. How long did it take you to get to Disney?
15 hours
Which law is also known as the Law of Inertia?
Newton's First Law