A force that is equal. There is no motion (potential energy). Example. 40N down and 40N up.
100
What does constant speed mean?
The speed stays the same and is not changing.
100
Give an example of potential energy.
Energy that has no motion.
100
What is the purpose of simple machines?
To make work easier.
100
How many newton's laws are there?
Three
200
What is net force?
All the forces acting on the object, or the combined force.
200
If the distance a car travels is 50m and it took 10s, what is the speed?
5 m/s
200
The higher the object, the more __________ energy.
potential
200
What is the formula for work?
Force X distance
200
What is the definition of acceleration?
A change velocity (speed and direction).
300
Force is measured in what units?
Newtons
300
What is the definition of speed?
Speed is distance in a given amount of time.
300
Give an example of kinetic energy.
Anything that is in motion or moving.
300
What piece of equipment is used for measuring force?
Spring Scale
300
What type of graph is used to graph speed?
A line graph
400
How many forces are always acting on us?
At least 2.
400
What is the formula for distance?
speed X time
400
What is inertia?
resistance of an object to a change in motion (Newton's 1st law)
400
List another simple machine other than a inclined plane and pulley.
Wedge, Wheel and Axle, Screw, or Lever
400
How is no motion or no speed graphed?
With a horizontal line.
500
In a game of tug of war, one team is pulling the rope with 100N to the right and the other team is pulling the rope with 80N to the left. What is the net force?
20 N to the right
500
What are the titles of the x-axis and y-axis on a speed graph?
x-axis is time and y-axis is distance
500
What does F=ma stand for?
Force = mass times acceleration
500
What units is work measured in ?
Joules
500
Why does a brick require more force to move than a feather?