You throw a ball vertically upward from the roof of a tall building. The ball leaves your hand at a point evenwith the roof railing with an upward speed of 18.1 m/s; the ball is then in free fall. On its way back down, itjust misses the railing. Find the maximum height reached.Note: We know that height is a scalar quantity. Be careful with the sign of the final answer

The projectile motion corresponds to throwing an object upwards under free-fall at an angle to the…

Answered: You throw a ball vertically upward from…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

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A student at the top of a building of height h throws one ball upward with a speed of i and then throws a second ball downward with the same initial speed i. Just before it reaches the ground, is the final speed of the ball thrown upward (a) larger, (b) smaller, or (c) the same in magnitude, compared with the final speed of the ball thrown downward?
In the vertical jump, an Kobe Bryant starts from a crouch and jumps upward to reach as high as possible. Even the best athletes spend little more than 1.00 s in the air (their "hang time"). Treat Kobe as a particle and let ymax be his maximum height above the floor. Note: this isn't the entire story since Kobe can twist and curl up in the air, but then we can no longer treat him as a particle. Hint: Find v0 to reach y_max in terms of g and y_max and recall the velocity at y_max is zero. Then find v1 to reach y_max/2 with the same kinematic equation. The time to reach y_max is obtained from v0=g (t), and the time to reach y_max/2 is given by v1-v0= -g(t1). Now, t1 is the time to reach y_max/2, and the quantity t-t1 is the time to go from y_max/2 to y_max. You want the ratio of (t-t1)/t1 Note from Asker: I am generally confused on how to manipulate the formulas, so if you could show every step that would be great, Thank You. Part A Part complete To explain why…
please answer both Severar vectors in the x-y plane are shown in the tigure with their tails at the origin of the coordinate system and with a label at their heads. Two of these vectors are given in terms of the unit-vectors i and j as P = (5.80i + 2.10j) and Q = (-1.10i + 4.40j), where the numbers are measured in meters. 4. 2. 1. -1 -2 -4 -5 6-5-4-3-2-1 12 3456 X (m) Identify vectors P and Q in the figure. The label of vector P on the figure is DALIOB: 2. C 3 D: 40E: SO 6 The tabel of vector Q on the figure is OA: 1108: 21 C: 3O0: 40 E: SOF 6 An electric point charge of Q, = 8.37 nC is placed at the origin of the real axis. Another point charge of Q2 = 4.25 nC is placed at a position of p = 3.58 m on the real axis. At which position can a third point charge of q -7.61 nC be placed so that the net electrostatic force on it is zero? (in m) OA: 1.449 OB: 1.637 0C: 1.85 OD: 2.09 OE: 2.362 OF: 2.669 OG: 3.016 OH: 3.408 Submit Answer Tries 0/20 This discussion is closed. Send Feedback ()
(b) y-coordinate Need Help? Read It Watch It Submit Answer 2. DETAILS SERCP11 3.2.P.009. MY NOTES ASK YOUR TEACHER The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that height? m/s Need Help? Read It Watch It PRACTICE AOTHER MY NOTES ASK YOUR TEACHER 3. DETAILS SERCP11 3.2.P.014. From the window of a building, a ball is tossed from a height yo above the ground with an initial velocity of 8.90 m/s and angle of 22.0° below the horizontal. It strikes the gyound 6.00 s (a) If the base of the building is taken to be the origin of the coordinates, with upward-the positive y-direction, what are the initial coordinates of the ball? (Use the following as necessary: Yo: Assume SI units. Do not substitute numerical values; use variables only.) later. 10:03
A diver jumps off a cliff of h at an angle of 0 =38° (see figure below). He reaches a maximum height of hmaz x = 42m from the base of the cliff. Determine the speed of the diver just before he hits the water, = 3m above the top of the cliff before falling to the water below. He hits the water VA =?.Express your answer in units of m/s. Take g 9.80m/s2. Round your answer to zero decimal places. Jrmax Answer:
A space shuttle lands on a distant planet where the gravitational acceleration is 2.0 ( We do not know thelocal units of length and time , but they are consistent throughout the problem). The shuttle coasts along aleve, frictionless plane with a speed of 6.0. It then coasts up a frictionless ramp of height 5.0 and angle 0f 30°.After a brief ballistic flight, it lands a distance S from the ramp. Solve for S in local units of length. Assume theshuttle is small compared to the local length unit and that all atmospheric effects are negligible. Use x and y components.
Under certain conditions, tsunami waves encountering land will develop into bores. A bore is a surge of water much like what would be expected if a dam failed suddenly and emptied a reservoir into a river bed. In the case of a bore traveling from the ocean into a dry river bed, one study† shows that the velocity V of the tip of the bore is proportional to the square root of its height h. This is expressed in the formula below, where k is a constant. V = kh0.5 A bore travels up a dry river bed. How does the velocity of the tip compare with its initial velocity when its height is reduced to one third of its initial height? (Round your answer to two decimal places.) The velocity changes by a factor of ______. How does the height of the bore compare with its initial height when the velocity of the tip is reduced to one quarter of its initial velocity? (Round your answer to two decimal places.) The height is reduced to ______ of the initial height. If the tip of one bore surging up…
A prankster flips a coin off of the Empire Building at a height of 1054 feet above the ground. The initial vertical velocity of the coin is 1.20m/s. In real life, air resistance would limit the maximum speed the coin can attain during its fall, but if air resistance were not a factor and assuming it has practically no horizontal motion, answer the following questions. (1 foot = 0.3048m) a. What would the coin's velocity be when it hits the ground? b. How long would it take to hit? c. How high would the coin be halfway through the total falling time, and how fast would it be falling then?
This is scalar and vector quantities. Can someone please show me how to solve this? Thank you
A rocket accelerates at 25m/s2 from rest on a frictionless inclined surface. The inclined ramp has a height of 70m and makes a 32 degrees angle above the ground. The rocket stops accelerating at the instant it leaves the incline. If air resistance is negligible, what is the horizontal distance 'R' from the end of the ramp to the point of impact (where it hits the ground)? a) Draw a diagram of this situation and be sure to include the distance 'R' b) Calculate the distance 'R' from the end of the ramp to the point of impact. 1.Draw the clear diagram 2. Give the indicating distance 'R' 3. Show your work 4. Find vertical and horizontal components of velocity when rocket leaves ramp 5. Find distance 'R'
1.5 Scalars and Vectors Find the speed and direction of an object with vy 2.0 cm/s and vy= 3.0 cm/s. O 3.6 cm/s, 56° from the +x axis O 5.0 cm/s, 34° from the +x axis O 3.6 cm/s, 34 ° from the +x axis O 3.6 cm/s, 66° from the +x axis O 5.0 cm/s, 66° from the +x axis Submit Answer Save for Later X %24
A youth of mass m = 36 kg is swinging on a swig. Length from upper bar of swing set to the set is L = 3.7 m. The kid is attempting to swing all the way around in full circle. What minimum speed, in meters per second must the kid be moving at the top of the circular path in order to make a full circle?

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You throw a ball vertically upward from the roof of a tall building. The ball leaves your hand at a point even with the roof railing with an upward speed of 18.1 m/s; the ball is then in free fall. On its way back down, it just misses the railing. Find the maximum height reached.