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Suppose a field goal kicker (American football) can kick the ball at a launch speed of 58 miles/hour. If the ball is placed at the 50-yard line, he is actually kicking the ball 60 yards to the goal post. Additionally, the crossbar is 10 feet above the ground. (1 mile = 5280 ft = 1760 yds = 1609.3 m)
a. For what kick angles will the ball clear the goal posts?
b. What is the closest a ball can land beyond the goal post for a made field goal?
In tennis, a much softer ball is hit with a racket. Why are the two sets of equipment designed in this way? Can you think of other ball-paddle pairs in sports? How are they designed?
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Suppose that the earth is a uniform sphere and that its path around the sun is circular. Determine the kinetic energy that the earth has because of its motion around the sun
A converging lens has a focal length of 24.1 cm. Locate the object if a real image is located at a distance from the lens of 120.5 cm
The spring balance is reasonably accurate for determining the load mass, Explain how to use the Workin = Workout principle to verify the mass of the spring balance
The plates of a 7.4-µF capacitor have net charges of +0.83 µC and -0.83 µC respectively. Which plate is at the higher potential
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