...1D Kinematics: Motion in One Dimension

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1.

During aerobic exercising, people often suffer injuries to knees and other joints due to HIGH ACCELERATIONS. When do these high accelerations occur?



2.

Estimate the acceleration you subject yourself to if you walk into a brick wall at normal walking speed.

(Make a reasonable estimate of your speed and of the time it takes you to come to a stop.)



3.


The figure shows a displacement vs. time graph for a ball rolling along the floor. During the third second the speed of the ball was

1 m/s

2 m/s

3 m/s

cannot be determined





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