- #1
cgarr017
- 12
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just wanted to double check with you on a webassign question. i feel like I'm doing it right but webassign doesn't like my answer... question 2 says A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 1100 kg and receives a push of 17 N.
(a) What is the magnitude of the resulting acceleration?
17/1100= 0.015 or 1.5e-2 but webassign says its wrong
(b) If the craft starts from rest, how far will it travel in 1 day?
change in x=vo(change in t)+1/2a(change in t)^2
=1/2(0.015)(24)(3600)^2
=5.6e7
(c) How fast will it then be moving?
but then again if the acceleration magnitude is wrong then part b equation wouldn't work. I'm also unsure how to do part c. let me know your thoughts. thanks
(a) What is the magnitude of the resulting acceleration?
17/1100= 0.015 or 1.5e-2 but webassign says its wrong
(b) If the craft starts from rest, how far will it travel in 1 day?
change in x=vo(change in t)+1/2a(change in t)^2
=1/2(0.015)(24)(3600)^2
=5.6e7
(c) How fast will it then be moving?
but then again if the acceleration magnitude is wrong then part b equation wouldn't work. I'm also unsure how to do part c. let me know your thoughts. thanks