Acceleration

__**Acceleration**__
 * 1. Give definition of acceleration?** Change in velocity over time.


 * 2. Give examples of accelerated motion from surrounding world.** Drag Race


 * 3. How do we find change in velocity?** initial velocity - final velocity


 * 4. How do we find the rate at which velocity changes per time interval?** (intial velocity - final velocity)/time required for change

5**. What are the units of acceleration?** m/s squared.


 * 6. What affects a human body would feel if the stopping time of a shuttle bus is shorter?** The body will fly forward faster.


 * 7. Give examples of positive and negative directions of acceleration. How does the change in velocity affect the direction of acceleration?** A car slowing down and speeding up. If acceleration is positive, then it is going right and if acceleration is negative, then it is going left.


 * 8. How do we find acceleration on velocity vs. time graph?** (position initial - position final)/time interval


 * 9. If an object has constant acceleration, how is the average acceleration different from acceleration?** The average is the average of all the accelerations from velocotiy initial to velocity final. Acceleration is two points on the line.


 * 10. Describe how displacement is changing for every equal time interval for an object that is accelerating? Please provide examples from a lab. Provide mathematical relationship found in the lab.** It changes because as acceleration is increasing the more the object is moving from it's original position. In the ball hill lab, the ball went down the hill starting at the same position but went a longer distance, each time. The ball picked up more speed as the distance increased.


 * 11. Describe how velocity is changing for every equal time interval for an object traveling with constant acceleration. Provide examples form lab. Provide mathematical relationship found in the lab**. Velocity is increasing at a constant rate. We can go back to the ball lab, as acceleration increased at a constant rate, that means that the velocity would also increase at a constant rate.

**__ Up & Down Motion __**


 * What is the rate at which velocity changes through the entire motion? ** -9.8 (m/s)


 * Where is that marked on the Graph? ** The slope of velocity time graph (the red line).


 * What is the starting speed? ** 25.01 (m/s)


 * What is the speed at max height? ** 0 (m/s)


 * What is the speed right before it hits the ground? ** -25.01 (m/s)

**__Free Fall__** **How is the velocity changing every second?** It is constantly increasing every second it is falling. In our lab we found the object's velocity kept increasing by .24 (m/s).
 * If you were falling for 1 second how fast are you traveling in (mil/hr)? ** Roughly 20 mph.


 * Does mass affect the rate at which velocity changes for free falling obejects? ** No, mass has no affect. Shape could have some affect.