Please answer a-f Class Management Help Ch 2 test Begin Date: 1/26/2018 12:05:00

Question

Please answer a-f

Class Management Help Ch 2 test Begin Date: 1/26/2018 12:05:00 AM -- Due Date: 1/27/2018 11:59:00 PM End Date: 1/28/2018 2:00:00 AM (896) Problem 7: Andrew needs to get produce from the store, which is a distance D 1.3 km east of his house. Andrew rides his bike to the store at a constant speed of vi 6.9 m/s, and rides back to his house at the slower speed of v2-2.9 m/s. tore House Otheexpertta.com 17% Part (a) How long (in seconds) does it take for Andrew to reach the store? Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 3 Sin cos cotanasin0) acos) 0% per attempt) detailed view atanO cosh)tanh)cotanh0 acotan)sinh0 END Degrees Radians BACKSPACE DEL CLEAR Submit Hint I give up! Hints: 30% deduction per hint. Hints remaining: 3 Feedback: 30% deduction per feedback. 17% Part (b) In seconds, how long does the whole trip take? 17% Part (c) How long does the trip take in minutes? 17% Part (d) How much distance, in kilometers, did Andrew travel during the whole trip? 17% Part (e) What is the magnitude of Andrew's displacement, in km, for the entire trip? 17% Part (f) What is the direction of Andrew's displacement for the entire trip?

Explanation / Answer

(A) t = d / v1

t = (1.3 x 10^3 m ) / (6.9 m/s)

t = 188.4 sec

(B) time for store to house.

t' = 1300 / 2.9 = 448.3 sec

total time for trip = t + t' = 636.7 sec

(C) in minute = 636.7 / 60 = 10.6 minute

(D) total distance covered = 2(1.3) = 2.6 km

(E) dispalcement = final position - initial position

initial and final position are same for entire trip/ (that is house)

so displacement = 0

(F) displacement is zero.

so no direction.

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