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A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass fragments.One reaches the ground 2.75 seconds after the explosion. When does the 2nd reach the ground?

A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass fragments.One reaches the ground 2.75 seconds after the explosion. When does the 2nd reach the ground?

College Physics
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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A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass fragments.One reaches the ground 2.75 seconds after the explosion. When does the 2nd reach the ground?

CH r at the end AN/m. The 5 m/s, and ression of in a 2400-kg car has plowed into a 1700-kg parked car with is brake set. You measure skid marks showing that the combined wreckage moved 25 m before stopping, and you determine a fric. tional coefficient of 0.75. What do you report for the drunk driv- 78 er's speed just before the collision? 65. A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass frag- ments. One reaches the ground 2.75 s after the explosion. When does the second reach the ground? 66. Two objects moving in opposite directions with the same speed v y rebound CH es a 4400- he pair is km/h, and reckage. undergo a totally inelastic collision, and two-thirds of the initial kinetic energy is lost. Find the ratio of their masses. 67. Explosive bolts separate a 950-kg communications satellite from its 640-kg booster rocket, imparting a 350-N-s impulse. At what rage, two n second, op verti- average relotivo 11 Samsung Quad Camera Shot with my Galaxy A71
Transcribed Image Text:CH r at the end AN/m. The 5 m/s, and ression of in a 2400-kg car has plowed into a 1700-kg parked car with is brake set. You measure skid marks showing that the combined wreckage moved 25 m before stopping, and you determine a fric. tional coefficient of 0.75. What do you report for the drunk driv- 78 er's speed just before the collision? 65. A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass frag- ments. One reaches the ground 2.75 s after the explosion. When does the second reach the ground? 66. Two objects moving in opposite directions with the same speed v y rebound CH es a 4400- he pair is km/h, and reckage. undergo a totally inelastic collision, and two-thirds of the initial kinetic energy is lost. Find the ratio of their masses. 67. Explosive bolts separate a 950-kg communications satellite from its 640-kg booster rocket, imparting a 350-N-s impulse. At what rage, two n second, op verti- average relotivo 11 Samsung Quad Camera Shot with my Galaxy A71
its brake set. You measure skid marks showing that the combined wreckage moved 25 m before stopping, and you determine a frie tional coefficient of 0.75. What do you report for the drunk driv. er's speed just before the collision? 65. A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass frag- ments. One reaches the ground 2.75 s after the explosion. When does the second reach the ground? 66. Two objects moving in opposite directions with the same speed v undergo a totally inelastic collision, and two-thirds of the initial kinetic energy is lost. Find the ratio of their masses. 67. Explosive bolts separate a 950-kg communications satellite from its 640-kg booster rocket, imparting a 350-N•s impulse. At what relative speed do satellite and boortor MN/m. The .5 m/s, and pression of y rebound es a 4400- he pair is km/h, and reckage. age, two 1 second, op verti- CH average aton Samsung Quad Camera Shot with my Galaxy A71
Transcribed Image Text:its brake set. You measure skid marks showing that the combined wreckage moved 25 m before stopping, and you determine a frie tional coefficient of 0.75. What do you report for the drunk driv. er's speed just before the collision? 65. A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass frag- ments. One reaches the ground 2.75 s after the explosion. When does the second reach the ground? 66. Two objects moving in opposite directions with the same speed v undergo a totally inelastic collision, and two-thirds of the initial kinetic energy is lost. Find the ratio of their masses. 67. Explosive bolts separate a 950-kg communications satellite from its 640-kg booster rocket, imparting a 350-N•s impulse. At what relative speed do satellite and boortor MN/m. The .5 m/s, and pression of y rebound es a 4400- he pair is km/h, and reckage. age, two 1 second, op verti- CH average aton Samsung Quad Camera Shot with my Galaxy A71
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