How high is a building if it takes 9 seconds for an object to hit the floor? Pretend the objectwas dropped from the rooftop and a man was holding the ball at a height of 1 meter before letting itgo.A bomb is dropped from a plane 300m above ground. Ignoring the air resistance, calculate the(a) time that it takes before hitting the ground, (b) velocity of the impact.

time, t = 9 seconds man holding the ball at a height of 1m

Answered: How high is a building if it takes 9…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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An archer shoots an arrow horizontally and his friend drops a marble from the same height when the arrow is released. In the absence of air resistance, which of the following happens? Question 17 options: The arrow hits the ground first. The marble hits the ground first. Both hit the ground at the same time. You cannot tell from the information given.
A large explosion causes wood and metal debris to rise vertically into the air with an initial velocity of 144 feet per second. The function h = 144t gives the height of the falling debris above the ground, in feet, t seconds after the explosion. 16t2 A) Use the given function to find the height of the debris 3 second(s) after the explosion: Answer: After 3 second(s), the height is feet. B) How many seconds after the explosion will the debris hit the ground? Answer: seconds.
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The height (in meters) of a projectile shot vertically upward from a point 2 m above ground level with an initial velocity of 25.5 m/s is h = 2 + 25.5t - 4.9t2 after t seconds. (a) Find the velocity (in m/s) after t seconds. v(t) = Find the velocity (in m/s) after 2 seconds and after 4 seconds. v(2) = X m/s v(4) = X m/s (b) What is the value (in m/s) of v(t) when the projectile reaches its maximum height? v(t) = m/s When (in s) does the projectile reach its maximum height? (Round your answer to two decimal places.) ४ s (c) What is the maximum height (in m)? (Round your answer to two decimal places.) X m (d) When (in s) does it hit the ground? (Round your answer to two decimal places.) (e) With what velocity (in m/s) does it hit the ground? (Round your answer to two decimal places.) X m/s
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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.
During a recent winter storm, bales of hay had to be dropped from an airplane to a herd of cattle below. Assume the airplane flew horizontally at an altitude of 172 m with a constant velocity of 58.0 m/s and dropped one bale of hay every 4.0 seconds. It is reasonable to assume that air resistance will be negligible for this situation. About how far apart from each other will the bales land on the ground? Answer: m (rounded to the nearest whole number)
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