What is a force?
A push or a pull
When an object changes its speed or direction, is it balanced or unbalanced?
Unbalanced
speed - 5 miles per hour
time - 6 hours
Distance - ? miles
30 miles
An airplane has 4 basic forces effecting its flight: 1.____, 2.Drag, 3.Thrust, and 4.Weight/Gravity
Lift
Speed = Distance divided by
Time
Give an example of an object where all the forces are unbalanced.
A car speeding up, a car slowing down, an object changing direction, etc.
A force that slows down objects when they rub against each other
What is friction?
Is it possible to be moving and have all the forces be balanced?
Yes, if you are moving at a constant speed.
Name a surface with low friction
ice, a snow covered hill, ice on water, a slippery surface
Name a surface with a high amount of friction?
Sand, gravel, grass, carpet, etc
speed - 10 miles per hour
time - 7 hours
Distance - ?
70 miles
On a graph showing distance versus time, which type of line indicates no motion?
What is a horizontal line?
What is the net force?
What is 0 Newtons?
speed - 9 meters per second
time - ?
Distance - 81 meters
9 seconds
What are 2 forces acting on a book that is sitting on a table?
Gravity and Normal Force
An object's resistance to move if it is at rest, and the resistance to change its speed or direction is called this.
What is inertia?
In a tug-of-war, there are 50 N pulling right and 60 N pulling left that will result in this.
10 N to the left
This sudden change in a moving object's speed is a curved line on a graph.
What is Acceleration?
Interpret the graph below?
This is the force that pulls things to the center of the earth.
What is gravity?
This is the formula to calculate speed
What is distance divided by time?
What is the following graph illustrating below?
What is an object is accelerating?
How will this object move?
What is: It will move to the right
You and your dad are moving the couch to the other side of the living room. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
60 N right
Balloons pull your hair upwards because of this force.
Electricity or static electricity