Question 12 Two balls are thrown from the roof of a school building. The first ball is thrown at an angle (above the horizontal) while the second one is thrown horizontally, both with the same initial speed. Which statement correctly describes the movement of the two balls? Disregard air resistance. O The second ball has larger acceleration. The first ball has larger acceleration. O The balls travel the same horizontal distance. O The balls reach the ground at the same time. O The balls reach the ground with the same speed.

Question 12 Two balls are thrown from the roof of a school building. The first ball is thrown at an angle (above the horizontal) while the second one is thrown horizontally, both with the same initial speed. Which statement correctly describes the movement of the two balls? Disregard air resistance. O The second ball has larger acceleration. The first ball has larger acceleration. O The balls travel the same horizontal distance. O The balls reach the ground at the same time. O The balls reach the ground with the same speed.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter4: Two-and-three Dimensional Motion

Section: Chapter Questions

Problem 60PQ: A golfer hits his approach shot at an angle of 50.0, giving the ball an initial speed of 38.2 m/s...

See similar textbooks

Similar questions

A ball is thrown with an initial speed of 20 ?/? from one end of a horizontal platform with a length of 48 ? and a height of 32 ? at angle of 37° to the the horizontal. At the same time a man who is standing on the ground starts from rest and moves with a constant acceleration of ?(see Figure). (a) Find the time of flight of the ball (b) What should be the acceleration of the man so that he can hold the ball before it falls? cos53o =sin37o=0.6 cos37o =sin53o=0.8 g=9.8 m/s2
A projectile is launched with an initial velocity of (3m/s)i+(2 m/s)j. Neglect air resistance.(a) What is its velocity at the top of its trajectory? (b) What is its acceleration at the top of its trajectory? Be certain that each of your answers is in the form of a vector.
A person standing at the top of a hemispherical rock of radius R kicks a ball (initially at rest on the top of the rock) to give it horizontal velocity vi as shown in Figure P3.56. (a) What must be its minimum initial speed if the ball is never to hit the rock after it is kicked? (b) With this initial speed, how far from the base of the rock does the ball hit the ground?
Chinook salmon are able to move through water especially fast by jumping out of the water periodically. This behavior is called porpoising. Suppose a salmon swimming in still water jumps out of the water with velocity 6.26 m/s at 45.0 above the horizontal, sails through the air a distance L before returning to the water, and then swims the same distance L underwater in a straight, horizontal line with velocity 3.58 m/s before jumping out again. (a) Determine the average velocity of the fish for the entire process of jumping and swimming underwater. (b) Consider the time interval required to travel the entire distance of 2L. By what percentage is this time interval reduced by the jumping/swimming process compared with simply swimming underwater at 3.58 m/s?
A football quarterback is moving straight backward at a speed of 2.00 m/s when he throws a pass to a player 18.0 m straight downfield. (a) If the ball is thrown at an angle of 25° relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground? (b) How long does it take to get to the receiver? (c) What is its maximum height above its point of release?
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the distance from the limb to the level of the saddle is 3.00 m. (a) What must be the horizontal distance between the saddle and limb when the ranch hand makes his move? (b) For what time interval is he in the air?
A basketball player is running at 5.00 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity. (a) What vertical velocity does he need to rise 0.750 m above the floor? (b) How far from the basket (measured in the horizontal direction) must he start his jump to reach his maximum height at the same time as he reaches the basket?
A rugby player passes the ball 7.00 m across the field, where it is caught at the same height as it left his hand. (a) At what angle was the ball thrown if its initial speed was 12.0 m/s, assuming that the smaller of the possible angles was used? (b) What other angle gives the same range, and why would it not be used? (c) How long did this pass take?
As some molten metal splashes, one droplet flies off to the east with initial velocity vi at angle i above the horizontal, and another droplet flies off to the west with the same speed at the same angle above the horizontal as shown in Figure P4.40. In terms of vi and i, find the distance between the two droplets as a function of time. Figure P4.40
One of the fastest recorded pitches in major league baseball, thrown by Tim Lincecum in 2009, was clocked at 101.0 mi/h (Fig. P3.8). If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away? Figure P3.8 Tim Lincecum throws a baseball.
A golfer hits his approach shot at an angle of 50.0, giving the ball an initial speed of 38.2 m/s (Fig. P4.60). The ball lands on the elevated green, 5.50 m above the initial position near the hole, and stops immediately. a. How much time passed while the ball was in the air? b. How far did the ball travel horizontally before landing? c. What was the peak height reached by the ball? FIGURE P4.60
A hot-air balloonist, rising vertically with a constant velocity of magnitude 5.00 m>s, releases a sandbag at an instant when the balloon is 40.0 m above the ground (Fig. E2.44). After the sandbag is released, it is in free fall. (a) Compute the position and velocity of the sandbag at 0.250 s and 1.00 s after its release. (b) How many seconds after its release does the bag strike the ground? (c) With what magnitude of velocity does it strike the ground? (d) What is the greatest height above the ground that the sandbag reaches? (e) Sketch ayt, vyt, and y-t graphs for the motion answer the ff with solution A, B, C, D, E