Motion in One Dimension 2 2.1 Describing Motion Sketch position- versus-time gra

Question

Motion in One Dimension 2 2.1 Describing Motion Sketch position- versus-time graphs for the following motions. Include a ttion is given both axes with units that are reasonable for this motion in the problems. For other quantities, make reasonable estimates Note: A sketched graph is hand-drawn, rather than laid out with a ruler. Even so. . Some numerical in be neat, accurate, and include axis labels. a. A student walks to the bus stop, waits for the bus, and then rides to campus. Assume that all the motion is along a straight street. b. A student walks slowly to the bus stop, realizes he forgot his paper that is due, and quickly walks home to get it. The quarterback drops back 10 yards from the line of scrimmage, and then throws a pass 20 yards to a receiver, who catches it and sprints 20 yards to the goal. Draw your graph for the foothall. Think carefully about what the slopes of the lines should be.

Explanation / Answer

question 2-

a- the postion of the particle at 2 sec= 10cm

6 sec= 20cm

10 sec= 40cm

b- velocity of a particle is dx/dt

hence velocity at 4 sec= 5cm/s

c- velocity from t=4 to t=6 = 0 as dx/dt =0

d- velocity from t=6 to t=10 = 5cm/s

e- velocity from t=10 to t=12 = -10cm/s

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