Course Home Mastering Physics Free fall, 2 dimensional motion, projectiles 3 My
ID: 1879034 • Letter: C
Question
Course Home Mastering Physics Free fall, 2 dimensional motion, projectiles 3 My Courses Exercise 3.5 11 of 17> Course Home Syllabus Scores e Text Study Area Document Sharing User Settings Course Tools A jet plane is flying at a constant altitude. At time t1 0 it has components of velocity95 m/s Part A -105 m/s . At time) t2 :-30.5 s tho components are vr 160 m/s, ,-42 m/s For this time interval calculate the average acceleration. Give your answer as a pair of components separated by a comma. For example, if you think the x component is 3 and the y component is 4, then you should enter 3,4. Express your answer using two significant figures. ape m/s2 Submit Part B Find the magnitude of the average acceleration. Express your answer using two significant figures. Submit PartC Find the direction of the average acceleration (let the direction be the angle that the vector makes with the +x-axis, Submit Provide Feedback Next >Explanation / Answer
Using equation of motion, v = u + at
Acceleration, a = v-u / t
A)
Horizontal component, Ax = (160-95)/ 30.5 = 2.13 m/s^2
Vertical component, Ay = (42 - 105)/ 30.5 = -2.07m/^2
Average acceleration, a = 2.13 i - 2.07 j
B)
|a| = sqrt(2.13^2 + 2.07^2) = 2.96 m/s^2
C)
Theta = 360 - arctan (2.07/ 2.13) = 315.82 degrees.
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