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Q1. A 60-g ball travelling at 22.0 m/s is bounced off a brick wall and rebounds at 20.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50 ms, what is an average acceleration of the ball during this time interval?
Q2. A soccer ball with a mass of 436 g bounces off the crossbar of a goal and is deflected upward at an angle of 55.7° with respect to horizontal. Immediately after the deflection, the kinetic energy of the ball is 46.5 J. What are vertical and horizontal components of the ball's momentum immediately after striking the crossbar?
Q3. A woman walks 240 m in the direction 47° east of north, then 175 m directly east. Find
(a) the magnitude and (b) the angle (from due east) of her final displacement from the starting point. (c) Find the distance she walks.
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