So the SLOPE of the curve for the speed would be getting STEEPER. The average speed gets faster in the 2nd second than in the 1st second. If you try to get your car up to 70 miles per hour when you pull off the shoulder onto I-380 after stopping because of the deer, how far will your car go in the first second? In the second second? In the 3rd second? That is easing into the motion. If you slam on your brakes in a car when you are going 75 miles per hour as you spot a deer running out on the road, and it takes you 50 yards to get stopped and 5 seconds to get stopped, where would your car be after the 1st second (of 5 seconds) of squeeling tires? It would NOT be 10 yards of the 50 yards, right? The first second your car might have gone 25 yards, or half the distance! That is easing out of the motion. The key question is how long does it take to achieve that total journey is halfway done? In order to collect all the data for this experiment. The keyframes are at 1 and 25 for the first two panels and are at 35 and 60 for the 3rd of the 3 panels (Custom Ease In/Ease Out panels). Controlled variables include, but are not limited to, the mass of the tennis ball and gravity. The RED square highlights the moment when the Ball has gone exactly 50% of the distance it needs to travel to get from one KEYFRAME to the next KEYFRAME.

The horizontal axis is labeled FRAMES in the Custom Ease In/Ease Out panels (windows or dialog boxes) shown above here.

Note where the SLOPE flattens out and the ball nearly stops.

Note where the SLOPE is steeper for the EASE OUT graph.

Note how the slope of the curve is almost FLAT from frame 1 to frame 5. After Frame 20 up until Frame 25 it has a steep slope.

Note where the SLOPE is steepest for the EASE IN graph.

See the NO EASING graph shown above here.

The moments in time are called FRAMES in Flash. The shadows or onion skins are the same distance apart at every one of the moments in time. The slope of its line is the same everywhere, indicating a constant rate of speed. Is very slow (the ball shadows are very, very close together at the top) but then becomes faster and faster (the ball shadows are farthest apart right at the bottom, where the ball is about The ONION SKINS screen snapshot from the Flash screen snapshot shows the EASE IN as the ball drops from the top to the floor. The red ball eases in to the motion as it falls to the floor and eases out of the motion as it bounces back up from the floor.For this calculation use the accepted value of the acceleration due to gravity, g = -9.81 m/sec 2. The height of the apex is recorded in your table. Use the fact that the ball was originally released from rest off of the roof which was 5.14 meters above the ground. You are to calculate the coefficient of restitution for the third ball. In our lab, it can be calculated as the ratio of |v o| for the ball rising to the apex divided by |v f | for the ball falling from its initial release off the roof. This bouncing ball experiment is a great way to engage your kids in their science lessons, and will help them to remember the effects of gravity. The coefficient of restitution is a measure of the speed of separation to the speed of approach in a collision. Why did the ball not bounce back up to the height from which it was originally released? How should the ball’s impact velocity when it first strikes the ground at the start of the bounce compare to its final impact velocity when it strikes the ground at the conclusion of the bounce? Support your answer. Which aspect of the data collection had the least precision: the timing or the ball's height measurement? Support your choice.

Using your average experimental value for 'g', calculate a percent error against the accepted value for the acceleration due to gravity at sea level, -9.81 m/sec 2. What is your group's average experimental value for 'g' based on all 5 trials?

Bouncing ball gravity lab