Physics Review QuestionUnit:
MechanicsQuestion:
A boat initially traveling at 10. meters per second accelerates uniformly at the rate
of 5.0 meters per second^{2} for 10. seconds. How far does the boat travel during this time?(1
) 50. m(2
) 250 m(3
) 350 m(4
) 500 mWhat is this question really asking?
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]Answer 1
50. m INCORRECT To come up with 50. m as your answer it is likely that you took thae acceleration of 5m/s ^{2} and multiplied it by either the 10 second time or by the 10 m/s initial velocity.
Either way, there is no formula d=at nor is there a formula d=av_{i}.
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Answer 2
250 m INCORRECT You seem to have made a common mistake. You only used the last half of the formula: s=v _{i}t + 0.5at^{2}return to top
Answer 3
350 m CORRECT Congratulations! You correctly used the formula : s=v _{i}t + 0.5at^{2}
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Answer 4
500 m INCORRECT To get this answer you probably took the three numbers you were given and multiplied them together. Make sure there is method to your madness...use a formula. return to top
What's this question really asking?
This question is really asking if you understand the relationship between acceleration, initial velocity, and distance travelled. Here is a list of what each of the pieces of information you are given actually translate into: v _{i}=10. m/sa=5.0 m/s ^{2}t= 10. sec. s= ? return to top |

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