Acceleration

Book page 48 -59 1. Give definition of acceleration? -The quantity that describes the rate of change in velocity. 2. Give examples of accelerated motion from surrounding world. -Race Car -Unsain Bolt, running one hundred meter dash, while reaching the maximum speed 3. How do we find change in velocity? -(Vf-Vi) 4. How do we find the rate at which velocity changes per time interval? -Acceleration 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? -feeling of moving to the front of the bus, if the bus stops faster then they will basically fly into the seat in front of them faster than if they were slowing down more. 7. Give examples of positive and negative directions of acceleration. How does the change in velocity affect the direction of acceleration? -when a car speeds up and slows down, if the velocity goes up, the acceleration will increase positivly. if the velocity goes down the acceleration will be negative or the acceleration will be smaller.. 8. How do we find acceleration on velocity vs. time graph? -find the slope off each time interval 9. If an object has constant acceleration, how is the average acceleration different from acceleration? -the average acceleration will be the same as a constant acceleration. acceleration is just the speed that the object is increaseing by.

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. -the displacement will increase because the spped inside each time interval is faster then the previous. for instance when the ball rolled down the ramp it gained speed there for making the time shorter or for equal time the distance traveled in that time longer. when the ball rolled down the ramp the times got shorter every time it reached the next time interval.

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. -the velocity will change for each time interval because acceleration means the object is moving at a highwer rate of speed and therefore the velocity will increase with acceleration, but the acceleration is not increasing.. in the rolling ball lab the ball had a shorter time inbetween the different segments because acceleration was occuring and the velocity was getting higher.

velocity is changing every second in the graph becasue there is an acceleration, which means the velocity goes up a certain speed every equal time interval. if you were falling for one second you would be falling roughly 20 miles per hour.the mass of an object does noteffect the rate of speed at which an object falls.
 * //__Free Fall__//**

Up nand Down Motion the velocity is changing at a rate of - 10 m/s. it is marked at the acceleration the starting speed is about -25 m/s the speed at the max height is 0 it is the same speed when it started