Acceleration 1/21/18

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Acceleration is the increase in the rate of speed of an object's motion. In physics, acceleration is the rate of change of velocity of an object per unit time. Acceleration measured two changes, the change in position of an object and the change in velocity of an object. An example of acceleration is when an object speeds up. To find the acceleration of an object's motion you need to follow a certain formula. The formula for acceleration is velocity divided time or more specifically the difference between the velocity final and velocity initial, divided by time. If the acceleration you have found is a negative acceleration as the numbers turn out to be negative, then this is called a deceleration. You will usually have a deceleration when the velocity final is smaller than the velocity initial so when you subtract and divide, the numbers are negative. An example of deceleration in an object is when an object slows down. Once you have found the acceleration with this formula, the units for acceleration is m/s^2 which is the measurement unit per second squared.

S&EP - SP3: Planning and carrying out investigations

I identified questions to be investigated when I asked what the velocity of the hot wheels car would be at 1 seconds, 2 seconds, 3 seconds, and 4 seconds. I asked these questions when the height of the hot wheels ramp was at one book, two books, and three books. I identified my manipulated variables which were the height of the hot wheels ramp. We changed this variable by adding more books under the ramp to make the ramp steeper. The controlled variables of this experiment were the same hot wheels car, the same ramp, the same timer, and the same units of time and measurement. I designed and performed experiments to test my hypotheses. I thought that the hot wheels would have a larger acceleration when the hot wheels ramp was steeper, and proved this by testing and finding the acceleration of the hot wheels velocity when going down ramps with different heights. These heights include one book, two books, and three books. I decided to collect the measurement of the hot wheels car at 1 second, 2 seconds, 3 seconds, and 4 seconds, this is the position of the car at different times. I chose to collect this data so I could calculate the velocity of the hot wheels car and eventually the acceleration.