Physics, 01.11.2019 01:31, lilyclairehutson
A2-kg box is pushed to the right by a force of 4 n for a distance of 32 m. it has an initial velocity of 4 m/s to the right. note: since this problem gives the distance ∆x traveled, first look at kinetic energy and calculate the net work using wnet = f ∆x = ∆k. after the kinetic energy values are calculated, then calculate the momenta and impulse values. remember that on quiz and test problems, you will need to decide which values should be calculated first.
a) what is the initial momentum pi of the box?
8 kg m/s
you are correct. computer's answer now shown above.
your receipt no. is 160-3868 : receipt previous tries
b) what is the impulse or change in momentum ∆p of the box?
m/s
tries 0/2
c) what is the final momentum pf of the box?
m/s
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d) what is the initial kinetic energy ki of the box?
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e) what is the change in kinetic energy ∆k of the box?
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f) what is the final kinetic energy kf of the box?
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g) how long ∆t does it take for the box to travel the distance of 32 m?
tries 0/2
Answers: 3
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Answers: 2
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Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?
Answers: 1
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