vocab
What does elastic limit mean?
The maximum amount of deformation an object can withstand, until it will deform permanently.
How does changing the speed of an object affect the forces on the objects during collisions?
When we increase our speed, the force of the object increases
What is the relationship between change in the mass of a moving object and its kinetic energy
When one increases so does the other
Air resistance
What's the definition of rigid
Unable to bend or be forced out of shape; not flexible
How much does doubling the speed of an object affect it's kinetic energy and damage it causes?
It increases both energy and damage
What's an independent variable
The variable you change every test
what is it called when an objects energy gets sent to the object it touches
an energy transfer
What's deform
Bend, distort; change shape
How much does doubling the MASS of an object affect its kinetic energy and damage it causes?
It would double the Kinetic Energy and the damage as well
What is the relationship between change in the speed of a moving object and its kinetic energy
when one increases the other does as well
if theres air resistance, what happens to the kinetic energy?
it decreases
what's peak force
maximum amount of force
What evidence do you have to support the answer from the last question?
The kinetic energy vs. Mass graph that was done in class
what's a dependent variable
the variable that's to observe the effects caused by a change in the independent variable
if theres air resistance, what happens to the potential energy?
it increases
What is friction
A contact force going against motion that causes reduced speed or stopping
Where did the energy in our launcher system come from, and after the collisions where'd it go
It came from the contact force of the spring pressing on the cart and went into the cart being pushed
what's a controlled variable
variables to keep constant in each test
what does friction produce?
heat; thermal energy