Vocabulary
The greatest force measured during a collision
What is peak force?
When mass increases while speed stays the same, kinetic energy does this.
What is increases?
A material that increases contact time usually produces this kind of peak force.
What is a lower peak force?
This material best fits the group that stops motion quickly.
What is rigid plastic?
When a soccer ball hits a wall, the ball pushes on this object.
What is the wall?
Energy an object has because it is moving
What is kinetic energy?
Two carts move at the same speed. The cart with this property has more kinetic energy.
What is greater mass?
A rigid material that stops an object quickly usually produces this kind of peak force.
What is a higher peak force?
Soft foam and flexible gel spread the change in motion over this.
What is more time?
The wall pushes on the ball with forces that are equal in strength and this in direction.
What is opposite?
A change in the shape of a material
What is deformation?
When speed increases while mass stays the same, kinetic energy does this.
What is increases quickly?
Pad A compresses longer than Pad B. This pad will likely have the lower peak force.
What is Pad A?
Air cells and this structure can help spread a collision over more time.
What is a honeycomb structure?
In a test of how material structure affects peak force, change only this.
What is material structure?
Energy moving between objects or parts of a system
What is energy transfer?
Two balls have the same mass. Ball Y moves faster. This ball has more kinetic energy.
What is Ball Y?
Longer contact time lowers peak force because it does this to the change in motion.
What is spreads the change over more time?
During a collision, vibrations provide evidence of energy transformed into this.
What is sound?
In that fair test, measure this outcome.
What is peak force?
The amount of time two objects interact while touching
What is contact time?
Equal increases in speed cause kinetic energy to increase in this pattern.
What is by larger and larger amounts?
A material can deform more without having the highest peak force because deformation may increase this.
What is contact time?
Four signs of energy transfer or transformation named in the review.
What are changes in motion, shape, sound, and thermal energy?
Name two variables that should stay the same in the fair test.
What are any two of mass, speed, test surface, and sensor setup?