Force
What is the definition of force?
a push or a pull
What are the two types of energy?
Potential and Kinetic
What is the definition of speed?
The amount of distance traveled in a given time
What is another word for change in shape?
Deformation
How many laws of motion?
3
What is the unit of force?
Newtons
How does an object get gravitational potential energy
Being raised up
How do we calculate speed?
Speed = distance / time
What are the two types of deformation?
Temporary and permanent
What is the second law?
Force = mass * acceleration
What is the name of the force exerted in response to an applied force?
Reaction force
In a collision, energy is ______.
Transferred
On a distance/time graph how do we tell speed?
Steepness of slope of line
What cause change in shape?
Force
What is the first law?
An object at rest will remain at rest and object in motion will remain in motion unless acted on by unbalanced force
You are moving an 27Kg object by applying 30N of force while a friend is pretending to help by applying 7N, and the object is dragging with 24N of friction; what is the net force?
13N
When we doubled the mass and speed we found a relationship with kinetic energy; what was the relationship for each?
Doubling mass doubled kinetic energy (Direct Linear)
Doubling speed quadrupled kinetic energy (Direct nonlinear)
You run 100m in 3sec, what is your speed?
33.3 repeating m/s
What is the maximum force that can be applied and the object will deform but return to original shape?
Elastic limit
If an object is pushed with 30N of force and has a mass of 1500, what is its acceleration?
0.02 m/s/s
What is the acceleration of an object pushed with 45N of force and a mass of 200Kg (with units)?
.225m/s/s
What exact kind of energy does an inflated balloon have?
elastic potential
On a distance time graph what would acceleration look like?
A curve
What two factors are most important in causing damage in collision?
Force applied and material strength
How do all newton's laws apply to you right now?
You are at rest and will until an unbalance force is applied
You are everting force as your weight
You are being met by an equal but opposite force from the floor