Chapter 3: Q20. (page 69)
A ball is thrown horizontally from the roof of a building 7.5 m tall and lands 9.5 m from the base. What was the ball’s initial speed?
Short Answer
The ball’s initial velocity is .
Chapter 3: Q20. (page 69)
A ball is thrown horizontally from the roof of a building 7.5 m tall and lands 9.5 m from the base. What was the ball’s initial speed?
The ball’s initial velocity is .
All the tools & learning materials you need for study success - in one app.
Get started for freeA diver leaves the end of a 4.0-m-high diving board and strikes the water 1.3 s later, 3.0 m beyond the end of the board. Considering the diver as a particle, determine: (a) her initial velocity,, (b) the maximum height reached; and (c) the velocitywith which she enters the water.
If, is V necessarily greater thanand/or? Discuss.
A baseball player hits a ball that soars high into the air. After the ball has left the bat, and while it is traveling upward (at point P in Fig. 3–31), what is the direction of acceleration? Ignore the air resistance.
FIGURE 3-31 Misconceptual question 5
Estimate by what factor a person can jump farther on the Moon as compared to the Earth if the take-off speed and angle are the same. The acceleration due to gravity on the Moon is one-sixth what it is on Earth.
Suppose the kick in Example 3–6 is attempted 36.0 m from the goalposts, whose crossbar is 3.05 m above the ground. If the football is directed perfectly between the goalposts, will it pass over the bar and be a field goal? Show why or why not. If not, from what horizontal distance must this kick be made if it is to score?
What do you think about this solution?
We value your feedback to improve our textbook solutions.