& Snipping ToolO XFile Edit Tools HelpNewModeDelay -A baseball player throws a ball straight up into the air. At a height of 4.4 m above the release point, the ball is movingat 1.8 m/s. What was the ball's initial speed in m/s? assume g =9.8m/s?.Answer:9:41 PMO Type here to search日amazon10°CG ENG2021-10-17%2:

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College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter3: Two-dimensional Kinematics

Section: Chapter Questions

Problem 1CQ: Which of the following is a vector: a person's height, the altitude on Mt. Everest, the age of the...

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The CERN particle accelerator is circular with a circumference of 7.0 km. (a) What is the acceleration of the protons (m=1.671027kg)that move around the accelerator at 5of the speed of light? (The speed of light is v=3.00108m/s .) (b) What is the force on the protons?
(a) A car speedometer has a 5.0% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per hour. (1Km=0.6214)
The speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?
A hare and a tortoise compete in a race over a straight course 1.00 km long. The tortoise crawls at a speed of 0.200 m/s toward the finish line. The hare runs at a speed of 8.00 m/s toward the finish line for 0.800 km and then stops to tease the slow-moving tortoise as the tortoise eventually passes by. The hare waits for a while after the tortoise passes and then runs toward the finish line again at 8.00 m/s. Both the hare and the tortoise cross the finish line at the exact same instant. Assume both animals, when moving, move steadily at their respective speeds. (a) How far is the tortoise from the finish line when the hare resumes the race? (b) For how long in time was the hare stationary?
(a) Refer to Table 1.3 to determine the average distance between the Earth and the Sun. Then calculate the average speed of the Earth in its orbit in kilometers per second. (b) What is this in meters per second?
Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years?
Which of the following is a vector: a person's height, the altitude on Mt. Everest, the age of the Earth, the boiling point of water, the cost of this book, the Earth's population, the acceleration of gravity?
& Snipping Tool O X File Edit Tools Help New Mode Delay - A baseball player throws a ball straight up into the air. At a height of 4.4 m above the release point, the ball is moving at 1.8 m/s. What was the ball's initial speed in m/s? assume g = 9.8m/s?. Answer: 7:53 PM O Type here to search 日 amazon 9°C O G ENG 2021-10-17 %2:
An object is dropped from a tower, 153 ft above the ground. The object's height above ground t sec into the fall is s = 153 - 16t2. a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact? The object's velocity at time t is The object's speed at time t is ft / sec. The object's acceleration at time t is | ft/ sec2. (Simplify your answer.) It takes |sec for the object to hit the ground. (Round to the nearest tenth.) The object's velocity at the moment of impact is ft / sec. (Round to the nearest tenth.)
A stone is thrown straight up from the edge of a reof, 675 feet above the ground, at a speed of 18 feet SEOne per second. A. Remembering that the acceleration due to gravity is -32 feet pET second squared, how high is the stone 2 seconds later? Don't forget to enter the correct units. B.At what time does the stone hit the ground C. What is the velocity of the stone when it hits the ground?
An object is dropped from a tower, 171 ft above the ground. The object's height above ground t sec into the fall is s=171-16t2². a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact? The object's velocity at time t is The object's speed at time t is The object's acceleration at time t is ft/sec² (Simplify your answer.) ft/sec. It takes sec for the object to hit the ground. (Round to the nearest tenth.) The object's velocity at the moment of impact is (Round to the nearest tenth.) ft/sec. (10
An airplane is delivering food to a small island. It flies 100 m above the ground at a speed of 160 m/s. a. Sketch the situation showing the flight and the parcel. Draw a motion diagram for the parcel during its flight showing both horizontal and vertical componenets of the velocity along the parcel's trajectory in one diagram. b. Where should the parcel be releasedso it lands on the islandNeglect air resistance. c. Estimate whether you should release the parcel earlier or later if there is air resistance. Explain. You may include a motion diagram and a force diagram in your explanation. 0:48 am

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A baseball player throws a ball straight up into the air. At a height of 4.4 m above the release point, the ball is moving at 1.8 m/s. What was the ball's initial speed in m/s? assume g = 9.8m/s². Answer.