Arocket is fired vertically upward. at the instant it reaches some altitude with a speed of 100 m/s. it explodes into three fragments having equal mass. one fragment moves upward with a speed of 150 m/s following the explosion. the second fragment has a speed of 150 m/s and is moving east right after the explosion. what is the velocity of the third fragment immediately after the explosion?
Answers: 1
Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
Answers: 3
Physics, 22.06.2019 04:40
Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely
Answers: 1
Physics, 22.06.2019 10:30
J. j. thomson’s experiment disproved the theory that an atom
Answers: 3
Arocket is fired vertically upward. at the instant it reaches some altitude with a speed of 100 m/s....
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