1 You And Your Friend Ride Bicycles Along A Straight Path Beside A River The Position Vs Time Graphs For Both Bike Tr 1 (198.54 KiB) Viewed 39 times
1. You and your friend ride bicycles along a straight path beside a river. The position vs. time graphs for both bike trips using the same coordinate axes is shown in the graphs below. a. Calculate the slope of each position vs. time graph. Keep 2 significant figures. What is the physical meaning of the slope? (in another word, what physics quantity does the slope of position - time graph represent)? 500- Postion (m 0 0 50 Time (s) Friend b. Write the mathematic expressions for both motions (x as a function of t, v, as a function of t). c. What is the same between two bikes' motions? What is the difference between them? (hint: You are comparing the parameters in the mathematic expressions of both motions from part b) d. Draw a motion diagram that represents YOUR bike's motion (Your motion diagram should include a coordinate system with proper scales and velocity vectors). You 100
5 + 0 2. Using the velocity versus time graph below to (a) sketch a graph of position versus time. Assume that initial position is at xọ = 1m. (b) Find out the displacement of the object during first 5 seconds using both v-t graph and p-t graph. Your answer obtained from both graphs should be consistent with each other. Be careful with the "+" and "-" signs in vector calculation. Velocity (m/s) Position (m) 10 t(s) 5 + 0 1t(s) 10
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