A stone was dropped from a balloon which is ascending at a rate of 6 m/s when the balloon was 70 m. above the ground. Which of the following gives the velocity of the stone after 3 seconds? b. Which of the following gives the time required for the stone to attain a downward velocity of 15 m/s.? How long did it take the stone to hit the ground

A stone was dropped from a balloon which is ascending at a rate of 6 m/s when the balloon was 70 m. above the ground. Which of the following gives the velocity of the stone after 3 seconds? b. Which of the following gives the time required for the stone to attain a downward velocity of 15 m/s.? How long did it take the stone to hit the ground

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter8: Time And Time-related Variables In Engineering

Section: Chapter Questions

Problem 45P

See similar textbooks

Similar questions

4.2. A stone is dropped from the edge of a cliff. (a) What is its velocity in meters per second 3 s later? (b) How far does it fall in this time? (c) How far will it fall in the next second?
A ball is dropped freely from a balloon which is ascending at a rate of 3 m/s and is being accelerated upward at the rate of 1.0 m/s2. At the instant the ball was released, the balloon is 100 m. above the ground. When will the ball strikes the ground? What is the velocity of impact of the ball when it strikes the ground? c. What is the velocity of the ball after 2 seconds?
A stone is dropped from a balloon while ascending at a constant rate of 8.14 m/s and the stone reaches the ground in 7.14 seconds. Determine: a) Height of the balloon when the stone was dropped b) Velocity of the stone after 3 sec before it touches the ground c) Velocity of impact of the stone when it strikes the ground
A stone accidentally falls from rest from the edge of a 35-m-high building. When the stone is 14m above the ground, a man, 2m tall, looks up and notices that the stone is directly above him. Determine the time (in sec),at most, the man has to get out of the way. A ball is thrown straight upward and rises to a maximum height of 20m above its launch point. At what height above its launch point has the speed of the ball decreased to one-half of its initial value?
4.5 . A body in free fall reaches the ground in 5 s . ( a ) From what height in meters was it dropped ? ( b ) What is its final velocity ? ( 0 ) How far did it fall in the last second of its descent ?
A stone is thrown upward with an initial velocity of 12 m/s from the top of the building which is 80 m. high. At the same instant, a second stone is thrown upward from the ground with an initial velocity of 28 m/s. Find the after the stone is thrown, will they pass each other. How far from the ground will the stones pass each other? Determine the velocity of the first stone at the time they passed each other.
Suppose that you throw a ball straight up at 10 m/s and release it at 2 m above the ground. (a) What maximum height above the ground does the ball reach? (b) How long after you release it does the ball hits the ground?
If the body starts from rest at A and slides 200 ft down the 30° incline, how far will it then move along the other incline? What will be the velocity when it returns to B? Coeff fr= 0.20. please use energy-work method.
You throw a ball straight up with an initial velocity of 18.0 m/s. It passes a tree branch on the way up at a height of 6.0m. How much additional time elapses before the ball passes the tree branch on the way back down?
A 1 kg ball moving horizontally to the right at 12m/s strikes a 10kg block placed at rest at an inclined plane, which makes an angle of 25 degrees with the horizontal. The coefficient of restitution is 0.60 and the coefficient of kinetic friction between the block and the inclined surface is 0.40. What is the velocity of the block after impact? What is the velocity of the ball after impact?
. An open cylinder tank 0.5 m in diameter and 1 m in height is completely filled with water and rotated about its axis at 240 rpm. Determine the volume of water spilled out of the tank. Unit of the Correct Answer: liters Decimal Places required in the final answer: 2 An open cylindrical tank 3m high and 1.5m in diameter contains 2m high of water. If the cylinder rotates about its geometrical axis, what constant angular velocity can be attained if the depth of water at the center is 0.5m? Unit of the Correct Answer: rad/sec Decimal Places required in the final answer: 3 A vertical cylindrical tank is 9 m high and 5 m in diameter. It is two thirds full of water and is rotated uniformly about its axis until on the point of overflowing. Compute the linear velocity at the circumference of the tank. An open cylindrical vessel 2m diameter and 4.2 m depth is 2/3 full of water. If rotated about the vertical axis at constant angular speed 80 rpm, determine the amount of water in…
4.7 . A ball is thrown vertically upward with a velocity of 12 m / s . ( a ) At what height is the ball I s later ? ( h ) 2 s later ? What is the maximum height the ball reaches ?