College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 3, Problem 61PP
A large number of seeds are observed, and their initial launch angles are recorded. The range of projection angles is found to be −51° to 75°, with a mean of 31°. Approximately 65% of the seeds were launched between 6° and 56°. Which of the following hypotheses is best supported by these data? Seeds are preferentially launched
- A. at angles that maximize the height they travel above the plant.
- B. at angles below the horizontal in order to drive the seeds into the ground with more force.
- C. at angles that maximize the horizontal distance traveled from the plant.
- D. at angles that minimize the time the seeds spend exposed to the air.
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Chapter 3 Solutions
College Physics (10th Edition)
Ch. 3 - A teacher stands in the middle of a parking lot...Ch. 3 - Suppose you shoot an arrow across a ravine at the...Ch. 3 - A football is thrown in a parabolic path. Is there...Ch. 3 - If an athlete can give himself the same initial...Ch. 3 - The maximum range of a projectile occurs when it...Ch. 3 - A projectile is fired at an angle above the...Ch. 3 - An archer shoots an arrow from the top of a...Ch. 3 - An observer draws the path of a stone thrown into...Ch. 3 - In uniform circular motion, how does the...Ch. 3 - A hunter shoots a bullet from the top of a cliff....
Ch. 3 - You attach a weight to the end of a string of...Ch. 3 - According to what we have seen about circular...Ch. 3 - A cannonball is fired toward a vertical building...Ch. 3 - If the cannonball in the previous question is...Ch. 3 - A ball thrown horizontally from the top of a...Ch. 3 - Two balls are dropped from the top of the Leaning...Ch. 3 - Two balls are dropped at the same time from...Ch. 3 - An airplane flying at a constant horizontal...Ch. 3 - Your boat departs from the bank of a river that...Ch. 3 - A ball is thrown horizontally from the top of a...Ch. 3 - A child standing on a rotating carousel at a...Ch. 3 - An airplane whose airspeed is 600 mi/h is flying...Ch. 3 - At the same time that rock A is dropped from rest...Ch. 3 - A stone is thrown horizontally with a speed of 15...Ch. 3 - An object traveling at constant speed V in a...Ch. 3 - | A velocity vector has a magnitude of 25.0 m/s....Ch. 3 - | At an air show, a jet plane has velocity...Ch. 3 - A dragonfly flies from point A to point B along...Ch. 3 - | A coyote Chasing a rabbit is moving 8.00 m/s due...Ch. 3 - | A pool ball is rolling along a table with a...Ch. 3 - || An athlete starts at point A and runs at a...Ch. 3 - || A particle starts from rest at the origin with...Ch. 3 - | A projectile is fired from ground level at an...Ch. 3 - | A stone is thrown horizontally at 30.0 m/s from...Ch. 3 - | A baseball pitcher throws a fastball...Ch. 3 - | A physics book slides off a horizontal tabletop...Ch. 3 - | A tennis ball rolls off the edge of a tabletop...Ch. 3 - | A military helicopter on a training mission is...Ch. 3 - || A daring swimmer dives off a cliff with a...Ch. 3 - | A football is thrown with an initial upward...Ch. 3 - | A tennis player hits a ball at ground level,...Ch. 3 - || (a) A pistol that fires a signal flare gives it...Ch. 3 - | A projectile is fired at an angle of 50 above...Ch. 3 - || A batted baseball leaves the bat at an angle of...Ch. 3 - || A man stands on the roof of a 15.0-m-tall...Ch. 3 - | BIOThe champion jumper of the insect world. The...Ch. 3 - || A grasshopper leaps into the air from the edge...Ch. 3 - || Show that a projectile achieves its maximum...Ch. 3 - || A water balloon slingshot launches its...Ch. 3 - || Two archers shoot arrows in the same direction...Ch. 3 - | A bottle rocket can shoot its projectile...Ch. 3 - || An airplane is flying with a velocity of 90.0...Ch. 3 - | You swing a 2.2 kg stone in a circle of radius...Ch. 3 - || Consult Appendix E. Calculate the radial...Ch. 3 - | A model of a helicopter rotor has four blades,...Ch. 3 - || A wall clock has a second hand 15.0 cm long....Ch. 3 - | A curving freeway exit has a radius of 50.0 m...Ch. 3 - | BIO Pilot blackout in a power dive. A jet plane...Ch. 3 - || The rotation of the earth on its axis causes...Ch. 3 - || A canoe has a velocity of 0.40 m/s southeast...Ch. 3 - || Crossing the river, I. A river flows due south...Ch. 3 - || Crossing the river, II. (a) In which direction...Ch. 3 - | Youre standing outside on a windless day when...Ch. 3 - || BIO Bird migration. Canada geese migrate...Ch. 3 - A test rocket is launched by accelerating it along...Ch. 3 - || A player kicks a football at an angle of 40.0...Ch. 3 - || Fighting forest fires. When fighting forest...Ch. 3 - || Two projectiles are fired at 20 m/s from the...Ch. 3 - || A cart carrying a vertical missile launcher...Ch. 3 - || The longest home run. According to the Guinness...Ch. 3 - || On the first play of a football game, the...Ch. 3 - || DATA A projectile is fired horizontally at a...Ch. 3 - || A baseball thrown at an angle of 60.0 above the...Ch. 3 - || A boy 12.0 m above the ground in a tree throws...Ch. 3 - | A football is kicked from ground level at a...Ch. 3 - || A firefighting crew uses a water cannon that...Ch. 3 - || An archer shoots an arrow at an apple that is...Ch. 3 - ||| Look out! A snowball rolls off a barn roof...Ch. 3 - || BIO Spiraling up. It is common to see birds of...Ch. 3 - || A Ferris wheel with radius 14.0 m s turning...Ch. 3 - || A 76.0 kg boulder is rolling horizontally at...Ch. 3 - || A batter hits a baseball at a speed of 35 0 m/s...Ch. 3 - BIO Ballistic seed dispersal. Some plants disperse...Ch. 3 - About how long does it take a seed launched at 90...Ch. 3 - If a seed is launched at zero degrees with the...Ch. 3 - A large number of seeds are observed, and their...
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