Part c: How long does the trip take in min? Part d: How much distance, in kilome
ID: 1575560 • Letter: P
Question
Part c: How long does the trip take in min? Part d: How much distance, in kilometers, did Andrew travel during the whole trip? Part e: What is the magnitude of Andrews displacement, in km, for the entire trip? Part f: What is the direction of Andrews displacement for the entire trip? Homework 2 Begin Date: 1/19/2018 10:00:00 AM-Due Date: 2/2/2018 9:00:00 AM End Date: 5/12/2018 11:59:00 PM (10%) Problem 2: Andrew wishes to get groceries from the store, which is a distance D 1.9 km east of his house. Andrew drives his bike to the store at a constant speed of v 6.4 m/s, and drives back to his house at the slower speed of v2 = 2.9 m /s. House 17% Part (a) How long (in seconds) does it take for Andrew to reach the store? Grade Summary Potential 100% cotanO asinO acos) atan0 acotan0 sinh0 cosh0 tanh0 cotanh0 per attempt)Explanation / Answer
Given
Distance (d) = 1.9 km = 1.9 *1000 = 1900 m
onward velocity (v1) = 6.4 m/s
return velocity (v2) = 2.9 m/s
a )Time taken to reach the store (t1) = d/ v1 = 1900 / 6.4 = 296.87 s
b) time taken for terutn trip (t2) = d/ v2 = 1900 / 2.9 = 655.17 s
time taken for the whole trip (T) = t1 + t2 = 655.17 + 296.87 = 952.04 s
c) Total time taken in minutes = 952.04/60 = 15.86 minutes
d) total distance covered = 2d = 2 * 1900 = 3800 m = 3.8 km
e) Since Andrews returms back to starting point . Displacement is the shortest distance between initial and final position so displacement = 0 .
f) Since net displacement is 0 so it has not direction.