Consider a rock thrown off a bridge of height 73.4 m at an angle θ = 25° with respect to the horizontal as shown in Figure P4.20. The initial speed of the rock is 10.9 m/s. Find the following quantities: (a) the maximum height reached by the rock (b) the time it takes the rock to reach its maximum height (c) the time at which the rock lands (d) how far horizontally from the bridge the rock lands (e) the velocity of the rock (magnitude and direction) just before it lands. magnitude (f) direction: Give your answer in degrees. If you think the answer is "20 degrees down from the positive x-axis", you would enter "-20" (note the negative sign!)
Consider a rock thrown off a bridge of height 73.4 m at an angle θ = 25° with respect to the horizontal as shown in Figure P4.20. The initial speed of the rock is 10.9 m/s. Find the following quantities: (a) the maximum height reached by the rock (b) the time it takes the rock to reach its maximum height (c) the time at which the rock lands (d) how far horizontally from the bridge the rock lands (e) the velocity of the rock (magnitude and direction) just before it lands. magnitude (f) direction: Give your answer in degrees. If you think the answer is "20 degrees down from the positive x-axis", you would enter "-20" (note the negative sign!)
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 56P: A person standing at the top of a hemispherical rock of radius R kicks a ball (initially at rest on...
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Consider a rock thrown off a bridge of height 73.4 m at an angle θ = 25° with respect to the horizontal as shown in Figure P4.20. The initial speed of the rock is 10.9 m/s. Find the following quantities:
(a) the maximum height reached by the rock
(b) the time it takes the rock to reach its maximum height
(c) the time at which the rock lands
(d) how far horizontally from the bridge the rock lands
(e) the velocity of the rock (magnitude and direction) just before it lands.
magnitude
(f) direction: Give your answer in degrees. If you think the answer is "20 degrees down from the positive x-axis", you would enter "-20" (note the negative sign!)
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