With good tires and breaks, a car traveling 50 mi/hr on dry pavement can travel 400 ft when the driver reacts to something he sees and brings the vehicle to a stop. if this is done uniformly, what is the car's acceleration?

Explanation:

Given

initial velocity

Distance traveled before stopping

using equation of

where v=final velocity

u=initial Velocity

a=acceleration

s=displacement

v=0 as car stops after travelling

negative sign indicates it is deceleration

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

it breaks and dirupture other materials and other sencews from the bottom