# object’s mass affects acceleration

The purpose of this Motion Lab was to find the acceleration of a steel marble going down a straight track six different times to figure out how an object’s mass affects acceleration. It doesn’t due to Newton’s second law of motion. There were six different accelerations for each trial and they are: 7. 88 m/s squared, 6. 78 m/s squared, 6. 07 m/s squared, 5. 57 m/s squared, 4. 32 m/s squared, and 5. 11 m/s squared.

It’s possible to use any two points to figure out and calculate acceleration due to gravity. Sir Isaac Newton used the word “mass” as a synonym for “quantity of matter. ” Today, we precisely define mass as a “measure of inertia of a body. ” The more mass an object has the more difficult it is to change it’s state of motion, whether it is at rest or moving without net force acting on that body. In other words, without an outside force a body will remain still if still, if moving, keep moving in the same direction at a constant speed.

The acceleration of an object is directly proportional to the net force acting on it and is inversely proportional to its mass. Also, the direction of the acceleration is in the direction of the net force acting on the object. Mathematically, this proportionally. In other words, if the mass is constant, the force and acceleration are directly proportional which is corresponding in two states. To calculate the acceleration of the ball at the time of impact, subract the ball’s initial speed (which is zero) from it’s final speed and divide by the time it took to hit the targer.

In this lab, acceleration is independent of mass, but does depend on diameter (since the ball is rolling, not sliding or free-falling) the force imparted to the target ball had (about) the same acceleration, but different masses. One of the possible conditions of motion used is: Rest, from the steel marble starting at the top of the inclined track at 0 then rolled down, causing another condition of motion; acceleration due to the time it took the marble to fall down from the incline of the track.

And the last possible condition of motion is net force, which the direction of the acceleration is in the direction of the net force acting on the object. As for my sources of error; I made mistakes by changing my last two positions of photogate b too far but I went back to the pattern I was using before it was too late to turn it in, as you can see. So I don’t have any but next time I will pay closer attention and try not to do something off the wall to mess up my calculations or graph.

An object at rest will stay at rest, forever, as long as nothing pushes or pulls on it. An object in motion will stay in motion, traveling in a straight line, forever, until something pushes or pulls on it. The “forever” part is difficult to swallow sometimes. But imagine that you have three ramps set up, also imagine that the ramps are infinitely long and infinitely smooth. You let a marble roll down the first ramp, which is set at a slight incline.

The marble speeds up on its way down the ramp. Now, you give a gentle push to the marble going down uphill on the second ramp. It slows down as it goes up. Finally, you push a marble on a ramp that represents the middle state between the first two – in other words, a ramp that is perfectly horizontal. In this case, the marble will neither slow down nor speed up. In fact, it should keep rolling.