Physics, 28.09.2019 04:50 netflixacc0107
An athlete is running at a constant velocity with a javelin held in his right hand. the force he is applying on the javelin as he carries it is 5.0 newtons. if he covers a distance of 10 meters, what work has he done on the javelin?
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Physics, 22.06.2019 15:30
This is the number of complete movements of a wave per second.
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Physics, 22.06.2019 18:30
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
Answers: 1
Physics, 22.06.2019 20:30
Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.
Answers: 1
An athlete is running at a constant velocity with a javelin held in his right hand. the force he is...
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