Definitions
A push or pull action that changes the state of an object at rest or in motion
Force
Formula used to calculate force
F=ma
A variable that is manipulated by the scientist
Independent variable
Formula to calculate acceleration
a=F/m
The amount of matter in an object
Mass
A 1500 kg car accelerates at 2 m/s^2. Calculate the force.
3,000 N
Identify the dependent variable:
What effect does studying with music have on student test scores?
Student test scores
If the net force is doubled, then the acceleration is ________________
doubled
Unequal forces that result in a change in motion
Unbalanced forces
An object has a mass of 70 kg and a net force of 210 N acting on it. What is its acceleration?
3 N
Identify the independent variable:
What effect does sunlight have on plant growth?
Amount of sunlight
If the mass is doubled, then the acceleration is ___________________
Halved
Rate at which velocity changes with time, in terms of both speed and direction
Acceleration
An 10 kg ball rolls down a ramp with a force of 46 N. Find its acceleration.
4.6 m/s^2
A condition that does not change
Constant
If the net force is tripled, then the acceleration is _____________________
Tripled
An object or position near the object in motion
Point of Reference
An object pulled with 580 N of force accelerates 176 m/s^2. Calculate the mass of the object.
3.3 kg
What three things must be included in a data table (think of the top three boxes)?
Independent variable, dependent variable, mean of dependent variable
If the mass is tripled, the acceleration is reduced to ________________ of its original value
One-third