Concept explainers
Suppose you shoot an arrow across a ravine at the vertical cliff opposite you. a distance d away. as shown in Figure 3.30. On your first try, you aim your arrow 15° above the horizontal, directly toward point A; it strikes the cliff at a distance h below point A. On your next try. you aim the arrow 15° below the horizontal, toward point B, shooting it with the same speed. Will the second arrow strike the cliff (a) the same distance h below point B, (b) less than the distance h below point B, or (c) more than the distance h below point B?
Figure3.30
Question 2.
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
College Physics (10th Edition)
Additional Science Textbook Solutions
Essential University Physics: Volume 2 (3rd Edition)
Life in the Universe (4th Edition)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
College Physics
The Cosmic Perspective Fundamentals (2nd Edition)
The Cosmic Perspective (8th Edition)
- A diver initially moving horizontally with speed v dives off the edge of a vertical cliff and lands in the water a distance d from the base of the cliff. How far from the base of the cliff would the diver have landed if the diver initially had been moving horizontally with speed 2v?arrow_forwardA long jumper leaves the ground at 45 ∘ above the horizontal and lands 9.1 m away. What is her "takeoff" speed v0?Now she is out on a hike and comes to the left bank of a river. There is no bridge and the right bank is 10.0 m away horizontally and 2.5 m, vertically below. If she long jumps from the edge of the left bank at 45 ∘ with the speed calculated in A, how long, or short, of the opposite bank will she land?arrow_forwardA seasoned mini golfer is trying to make par on a tricky number five hole. The golfer can complete the hole by hitting the ball from the flat section it lays on, up a 45° ramp, over a moat, and into the hole which is d = 1.45 m away from the end of the ramp. If the opening of the hole and the end of the ramp are at the same height, y = 0.820 m, at what speed must the golfer hit the ball to launch the ball over the moat so that it lands directly in the hole? Assume a frictionless surface, so the ball slides without rotating. The acceleration due to gravity is 9.81 m/s². d m/s |45°arrow_forward
- A seasoned mini golfer is trying to make par on a tricky number five hole. The golfer can complete the hole by hitting the ball from the flat section it lays on, up a 45° ramp, over a moat, and into the hole which is d = 2.35 m away from the end of the ramp. If the opening of the hole and the end of the ramp are at the same height, y = 0.970 m, at what speed must the golfer hit the ball to launch the ball over the moat so that it lands directly in the hole? Assume a frictionless surface, so the ball slides without rotating. The acceleration due to gravity is 9.81 m/s?. d UI = m/s 45°arrow_forwardImagine an archer preparing to fire an arrow. The archer aims the arrow directly ahead, that is to say, parallel with the ground. Bows are drawn to the corner of the mouth when fired. Let's say, for this particular archer, that puts the arrow 1.8 m (about 5.5 feet) above the ground. Assume that we have measured the initial speed of arrows fired by this archer with this bow and it is 100 m/s. (Ignore wind resistance) a) At what point during the arrow's flight will it be moving the fastest? (Be careful here, think about it. You don't need to do any calculations to figure this out.) b) How long will it take for the arrow to hit the ground?c) How far will the arrow travel during this time period?arrow_forwardYou've told your friends and family that despite circumstances you are getting plenty of exercise by practicing basketball alone or with social distancing. In actuality you are merely throwing wadded paper toward the trash can while binging Netflix . The paper wad leaves your hand yo= 1.92 meters above the floor traveling at an angle 8 = 19.8 degrees above the horizontal. It lands exactly in the middle of the track can (Ytrash 1.16 meters high and Xtrash = 4.85 meters away). THROW Yo Calculate all the following: Vo=? 6 The initial velocity, vo, of the paper wad? The time it was in the air? seconds Xtrash meters/second Ytrasharrow_forward
- Jack Sparrow sees a Royal Navy ship around 500 meters away and wants it sunk immediately. You, as his trusty cannoneer, know that the cannons can fire with the speed of 100 meters per second. You have one shot. At what angle must you aim the cannon with respect to the floor to hit the Navy ship? O 7.24 O 39.41 78.46 O 14.67 O 2.87°arrow_forwardA BMX bicycle rider takes off from a ramp at a point 2.4 mm above the ground. The ramp is angled at 40∘∘ from the horizontal, and the rider's speed is 6.3 m/sm/s when he leaves the ramp. At what horizontal distance from the end of the ramp does he land?arrow_forwardOn a dare from a friend, you decide to try to jump a canyon using your bicycle as shown in the figure below. We will define a successful jump as one that allows you to just make it to the edge of the canyon on the far side. Ꮎ Yramp Calculate all the following: A custom ramp has been constructed for you which is yo = 29.6 meters high and is tipped an an angle of 0 = 44.7 degrees. The canyon has a width of Xcanyon 106.8 meters. Xcanyon The initial velocity, vo, of your bike? meters/second The time spent flying through the air second guessing your judgement? secondsarrow_forward
- An Orc archer below a 54 meter high tower (different height from the wall from problem 3) fires his crossbow at 45 m/s at a 53.1 degree angle from horizontal. What is the closest that the orc can stand to the tower to exactly hit a target on the top of the tower? What is the farthest that the orc can stand to the tower to exactly hit a target on the top of the tower? What is the highest point (above the tower, not the ground!) that the orc’s arrow can reach firing at this velocity and angle?arrow_forwardAs you stand on the edge of a canyon, you shoot horizontally at a target that is 100 meters away at the same height as you on the other side of the canyon. The initial speed of the arrow is 25 m/s. You aim directly at the bulls eye. If you can ignore air resistance where does the arrow strike? a) 19.6 meters below the bull's eye b) 78.4 m below the bull's eye c) 9.8 meters below the bull's eye d) directly at the bull's eyearrow_forwardKyle, a football player, kicked a 0.550 [??] ball off a rooftop that is 90.0 [?] off the ground, at 20.0 [?/?] oriented 30.0° degree above his horizon. His friend, Josh, caught the ball from a window at a distant building that is 40.0 [?] off the ground. Josh then released the ball from this height and let the ball fall to the ground. What is the speed of the ball just before it reaches Josh? ____ [?/?] What is the speed of the ball just before it reaches the ground? ____ [?/?]arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University