Week 4

 Something that has zero acceleration would be when a car moves at a constant speed and never slows down or stops. Velocity is how fast something goes in a certain direction. Acceleration is a change in velocity so an example of something with zero velocity would be a car racing on a drag strip. The car has to accelerate fast to start of with then it has to decelerate quickly when it comes to the end of te track.



Test Questions:

1. if a car moves from the rest to 5 m/s in 5 seconds, its average acceleration is..

A: 1m/s



2. What is the final velocity of a car that accelerated 10 m/s² from rest and traveled 180m?




3. What is the deference between velocity and acceleration?

A:  Velocity is quickness or speed of motion and acceleration is the rate of the change of velocity with respect to time.

Week 2

       Acceleration is used a lot in our daily lives, but the things that stick out in my mind most are cars because they are always stop and go or slow down and speed up. When I watch car races they use acceleration a lot. The cars have to decrease their acceleration when they go around corners and then increase acceleration on the straight a ways.The car's speed is not always constant therefore the race cars use acceleration.





Test Questions:

1. What is the acceleration formula?
A:   a = vf-vi
                t


2. Name two things you use everyday that have an accelerometer in them?
A: itouch or an airplane

3. If an object is moving at constant speed what is its acceleration?
A: the acceleration is zero because acceleration is defined as the change in speed.





I pretty much understand the just of how acceleration works i just think i need to spend a little more time practicing solving problems so i get a better understanding of how to solve them.