3. Two tennis balls begin a free fall from rest from the same height, 1.0 s apart. How long after the first tennis ball begins to fall will the two tennis balls be 10 m apart? HINT: Take t = 0 to be the time the later tennis ball is dropped, and set the "initial conditions" of both tennis balls to be their positions and velocities at this time. But don't forget to answer the question exactly as it is stated!

3. Two tennis balls begin a free fall from rest from the same height, 1.0 s apart. How long after the first tennis ball begins to fall will the two tennis balls be 10 m apart? HINT: Take t = 0 to be the time the later tennis ball is dropped, and set the "initial conditions" of both tennis balls to be their positions and velocities at this time. But don't forget to answer the question exactly as it is stated!

Name: Please include work and explanations 3. Two tennis balls begin a free
Uploaded: 2024-03-20T06:57:47.000Z
Channel: Bartleby
Description: Please include work and explanations 3. Two tennis balls begin a free fall from rest from the same height, 1.0 s apart. How longafter the first tennis ball begins to fall will the two tennis balls be 10 m apart?HINT: Take t 0 to be the time the later

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section: Chapter Questions

Problem 84A

See similar textbooks

Similar questions

4. A cat is resting on a lawn 25.7 m from a fence with a hole it in. A rabbit, hopping at a constant 8.7 m/s, bounces past the cat moving towards the fence. The cat gives chase, accelerating at 1.20 m/s?. a) How long would it take the rabbit to reach the fence, assuming that it's already moving at top speed? b) How long would it take the cat to reach the fence? c) Is the rabbit able to escape from the cat through the fence? Explain.
6. A ball is thrown upward with a velocity of 4.5 m/s. Its speed and the magnitude of its acceleration at the highest point (a) are both equal to zero (b) are given by 9.81 m/s and 0 m/s², respectively (c) are given by 0 m/s and 9.81 m/s², respectively (d) cannot be predicted unless the height is known Answer: 7. Which of the following statements about a projectile is not true? Assume that the air resistance is negligible. (a) Its motion is in two dimensions. (b) The only acceleration is in the vertical direction. (c) Its velocity in the horizontal direction remains the same throughout the flight. (d) The velocity at the highest point of its trajectory is zero. Answer:
3. In Physics, the height of a free-falling object at a given time t is given by h = –16t² + v,t + h., where v, is the initial velocity, and h, is the initial height. A student throws a ball upward from a height of 48ft, initially at 32 ft/s. What is the maximum height of the ball?
. When we estimate distances from velocity data, it is some- times necessary to use times fo, f1, fz, fz, ... that are not equally spaced. We can still estimate distances using the time periods At; = ti – ti-1. For example, on May 7, 1992, the space shuttle Endeavour was launched on mission STS-49, the purpose of which was to install a new perigee kick motor in an Intelsat communications satellite. The table, provided by NASA, gives the velocity data for the shuttle between liftoff and the jettisoning of the solid rocket boosters. Use these data to estimate the height above the earth's surface of the space shuttle Endeavour, 62 seconds after liftoff. Event Time (s) Velocity (ft/s) Launch Begin roll maneuver End roll maneuver 10 185 15 319 Throttle to 89% Throttle to 67% 20 447 32 742 Throttle to 104% 59 1325 Maximum dynamic pressure Solid rocket booster separation 62 1445 125 4151
9. A 6 feet tall cadet standing on the bridge of a ship throws a bolt vertically upwards with an initial velocity of 18 m/s. how a) high will it go? b)what is the time it takes to reach the maximum height?c( if the bolt misses the railing and goes down to the water below (which is he approximate to be 26 m in height from the railing) what is the total distance travelled by the bolt as it reaches the surface of the water? 10. A midshipwoman catches a ball 2.50s after throwing it vertically upward. With what speed did she throw it, and at what height did it reach
4) Problem 4: Gravitational acceleration on the moon is one sixth of that on Earth. A ball released from rest above the surface falls from height d in a time of t = 1.3 seconds. >Part (a) Write an expression for the final velocity of the ball when it impacts the surface of the moon assuming it is dropped from rest. This expression should be in terms of only. g (the al acceleration on Earth), and time, . select part the moon? Part (b) Calculate the final velocity. v. numerically in m/s. Part (c) Calculate the height, d (in meters), from which the ball was dropped. Part (d) From how high up would this ball need to be dropped on the earth, de (in meters), if it took the same time to reach the ground as it did on
9) A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof one second later. a) If the height of the building is 20m, what must the initial speed of the first ball be if both are to hit the ground at the same time? b) What must the height of the building be for both balls to reach the ground at the same time if |v] = 6™ ?
3. A ball is directly thrown upward with a velocity of 5 m/s. (a) Find the maximum height reached in m. (b) Find the total time of flight in s. (c) What will be the final velocity v of the ball just before it hits the ground? (Neglect air resistance.)
2. A particle is projected vertically upwards from the ground with an initial velocity of 20 m/s. If the acceleration due to gravity is -9.8 m/s², how long does it take for the particle to reach a height of 16 meters and what is its velocity at that point?
A dog and her handler are at rest, and are facing each other at a distance of 40.0 m. On command, they run towards each other: the handler runs at a constant speed vp = 2.5 m/s, while the dog first runs with constant acceleration ad = 2.0 m/s 2 until she reaches her maximum speed of vd = 4.5 m/s. a) Calculate the time it takes the dog to reach her maximum speed. Choose t = 0 when the handler and dog start to run. b) Find the positions of the handler and dog at the instant the dog reaches her maximum speed. Choose the coordinate, such as that the handler is at the origin x = 0 at time t = 0. %3D %3D %3D Notes Comments
Option 2 1. The body, vertically down with an initial speed of 5 m/s, in the last 2 s of the fall, the path went twice as much as in the previous 2 s. Determine the time and height of the fall.
. You and a friend work in buildings four equal-length blocks apart, and you plan to meet for lunch. Your friend strolls leisurely at 1.2 m/s, while you like a brisker pace of 1.6 m/s. Knowing this, you pick a restaurant between the two buildings at which you and your friend will arrive at the same instant if both of you leave your respective buildings at the same instant. In blocks, how far from your building is the restaurant? ..