Physics Grant HS
Understanding Motion through Graphs
Make graphs of time vs. distance, distance vs. instantaneous velocity and time vs. instantaneous velocity from the following data about a falling object. On all three of these graphs make sure the first variable is on the xaxis. Use graph paper. Distance (m) 0 1 2 3 4 5 6 7 8 9 10
Time (s) 0 0.45 0.64 0.78 0.90. 1.01 1.11 1.20 1.28 1.36 1.43
Vave at given time
Vinst at given time
1. Based on your graphs, 2. is the instantaneous velocity of a falling object, more directly related to the time it has fallen or to the distance it has fallen? Defend your evidence based on your graphs.
2. What is the shape of the time vs. distance graph? How does this graph show that the object is accelerating as it falls?
Physics Grant HS
Understanding Motion through Graphs
3. There is a physical constant that is the acceleration due to gravity on earth. Figure out what it is based on the data. (Hint: Just like velocity is the change in distance/position per unit of time, acceleration is the change in velocity per unit of time. This value will tell you the rate that an object accelerates as it’s falling due to gravity.)