Riccardo's Science Blog

Summary : Acceleration is an example of a vector quantity, meaning that it measures both the magnitude and direction. Acceleration is the rate of which an object changes its velocity. You are accelerating when you change your speed or change direction. Even slowing down is a form of acceleration, for deceleration is negative acceleration. To model acceleration in a graph, you can make a velocity-time graph. The y-axis represents the change in velocity. The x-axis represents the time. To measure acceleration, you take the change in velocity and divided by time. Acceleration is measured in units of distance units of time squared. S&EP-Using Mathematics: In the past few assignments and labs we have been doing, I have been seeing a lot of math used.  For instance, during the acceleration lab, I used math to find all the average velocities. This was done by adding all the velocities together and dividing by the number of velocities there were. As well as I used the formula...

Summary : Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. Velocity is a vector quantity that refers to "the rate at which an object changes its position." To find speed, you take the distance traveled and divide the time. This is also known as rise over run. You can model speed with a graph. The y-axis represents the distance from the initial point. The x-axis represents the time. The steeper the slope of the line, the faster the object is traveling. When the slope is traveling in the positive direction, the object is moving toward its final point. When the slope is in the negative direction, the object is moving back to its starting point. S&EP - Conducting Investigations: During the matchbox lab I designed and performed an experiment to test my hypotheses. I hypothesisized that the green car would have the highest average speed because when I go...

Summary : Motion is the change in position of an object over time. A scalar quantity measures the magnitude of something or the number that measures something. A vector quantity measures both the magnitude and the direction. Distance and displacement are examples of scalar and vector quantities. Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. While displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position. Speed and velocity are more examples of scalar and vector quantities. Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. Velocity is a vector quantity that refers to "the rate at which an object changes its position." SP2 - Using Models : I used models and diagrams when practicing distance and displacement...