Solve the following in 1 whole piece of paper and pass it tomorrow, October 7, 2016,12 noon
Problem 2: Two tennis ball launchers shoot balls at the same time, angle and initial
speed from different floors of a tall building. The balls land in the street
below. Ignore air resistance.
a. Which ball will have the greater acceleration while in flight? Explain your reasoning.
Problem 3: Balls A and B are launched from different heights. The reach the same maximum height at exactly the same point in space.
a. Which ball has a greater initial vertical component of velocity? Explain.
Problem 4: If a person can jump a horizontal distance of 3 m on Earth, how far could the person jump on the moon where the acceleration due to gravity is one-sixth of that on earth (1.7 m/s/s)?
Problem 5: A brick is thrown upward from the top of a building at an angle of 25 degrees above the horizontal and with an initial speed of 15 m/s. If the brick is in the air for 3 seconds, how high is the building? (Draw a picture.)
Problem 7: A daredevil tries to jump a canyon of width 10 m. To do so, he drives his motorcycle up an incline sloped at an angle of 15 degrees. What minimum speed is necessary to clear the canyon?
Problem 1: A rock is thrown with an initial
vertical velocity component of 30 m/s and an
initial horizontal velocity component of 40 m/s.
a. What will these velocity components be one second after the rock
reaches the top of its path?
b. Assuming the launch and landing
heights are the same, how long will the rock be in the air?
c. Assuming the launch and landing heights are the same, how far
will the rock land from where it was thrown?
Problem 2: Two tennis ball launchers shoot balls at the same time, angle and initial
speed from different floors of a tall building. The balls land in the street
below. Ignore air resistance. a. Which ball will have the greater acceleration while in flight? Explain your reasoning.
b. Which ball will hit farther from the
base of the building? Explain your reasoning.
c. Which ball will reach a greater
maximum height? Explain your reasoning.
e. How could you adjust only the angle
of the upper launcher so that the ball hits in the same place as the ball from
the lower launcher? Explain your reasoning.
f. How could you adjust only the angle
of the lower launcher so that the ball hits in the same place as the ball from
the upper launcher? Explain your reasoning.
Problem 3: Balls A and B are launched from different heights. The reach the same maximum height at exactly the same point in space.
a. Which ball has a greater initial vertical component of velocity? Explain.
b. Which ball has a greater initial
horizontal component of velocity? Explain.
c. Which ball has the larger launch
angle? Explain.
d. Which ball has greater acceleration
while in flight? Explain.
e. Which ball will land farther from the
launchers? Explain.
f. Which ball takes longer to reach
maximum height? Explain.
g. If the balls were launched
simultaneously, would they collide before landing? Explain.
Problem 4: If a person can jump a horizontal distance of 3 m on Earth, how far could the person jump on the moon where the acceleration due to gravity is one-sixth of that on earth (1.7 m/s/s)?
Problem 5: A brick is thrown upward from the top of a building at an angle of 25 degrees above the horizontal and with an initial speed of 15 m/s. If the brick is in the air for 3 seconds, how high is the building? (Draw a picture.)
Problem 7: A daredevil tries to jump a canyon of width 10 m. To do so, he drives his motorcycle up an incline sloped at an angle of 15 degrees. What minimum speed is necessary to clear the canyon?
