You are tasked with making a rubber band car. You have some wood, CD wheels, a couple of metal axles to work with. You may choose if you want to make your car go for distance or for speed, but you must state the goal. The idea will be that the rubber band will be the source
of energy in your car. Explain how you plan to make your car (including stating what sort of simple machines will be used) and state why
you feel it will accomplish the task of either traveling a great distance or traveling at a great speed. Make sure to use the language of
simple machines and energy.

if a star is moving toward earth, its light waves appear to be squeezed together. hope it

the bal will not change its velocity.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.