Vocab
Potential energy
Energy that is stored and waiting to be used
Give an example of clothing athletes wear to boost performance (explain how)
Tight clothes (drag), Shoes (energy), Caps (drag), etc...
This is where I have the most potential energy
Before being dropped
What is the force causing a ball to fall
Gravity
True or False. Babies have around 100 more bones than adults.
True
Kinetic Energy
Energy an object has in motion
What are ways athletes reduce drag?
Body position when moving, skin tight clothing, shaving, etc...
This is where I have the most kinetic energy.
As soon as I hit the ground.
When a ball hits the ground, what does some of its kinetic energy change into?
Thermal energy (sound is also correct)
True or False. In 1 billion years, it will be too hot for life to exist on earth.
False. It's actually 2.3 billion, so you've got time :)
Friction
The force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. (Similar answers acceptable)
Other than reducing drag through clothing, what are other ways athletes can perform better
Eating healthy, specialized workouts, other benefits through clothing (shoes, tennis racket, etc...), etc...
This is where I have the least kinetic energy.
Before being dropped/right after.
A stretched rubber band. Potential or Kinetic?
Potential
What Vitamin do you get from the sun
Vitamin D
Drag (Scientific)
The force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
What three ways does wearing clothing help at a basic level (Not the Olympics/professional sports)
Improve mentality, improve performance, can reduce chances of injury
I have the same amount of potential and kinetic energy
Halfway to the ground after being dropped.
A ball is lying on the ground (nothing under it). What energy does it have, if any?
No energy.
What is the only planet that spins clockwise.
(Hint, it's on the closer side to the sun)
Venus
Newton's Third Law
Give an example.
Every action has an equal an opposite reaction.
Ex. If I hit a wall, the wall exerts the same amount of force back on to me.
Name a sport and mention how athletes use drag to their benefit. What sport do athletes add drag in, and why?
Skiing (add for protection), Swimming, running, speed sports, etc. (reduce for speed)
Where is the kinetic energy turning into potential energy?
As I bounce back up.
How do drag and friction differ from one another?
Drag changes with the speed of the object, friction remains constant.
Why can the Eiffel Tower grow up to 15 cm in the summer?
Thermal Expansion (When heated - particles expand)