A softball pitcher throws a 0.17 kg ball toward a batter who is 20m away. The ball is traveling at 22 m/s when it leaves the pitcher’s hand. What is the ball’s kinetic energy at this point? A. 82 J
B. 2 J
C. 41 J
D. 4 J

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Alivestock company reports that the mean weight of a group of young steers is 1100 pounds with a standard deviation of 93 pounds. based on the model n(1100,93) for the weights of steers, what percent of steers weigh a) over 1050 pounds? b) under 1300 pounds? c) between 1150 and 1250 pounds?

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?