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tutave question2157751 ment Submission & Scoring dent Submission Essignment, you submit answers by question parts. The number of submissions remaining for each question part only changes ment Scoring submission is used for your score. 83/1.1 points) DETAILS PREVIOUS ANSWERS SHIPPS14 2.1.013. A motorboat starting from rest travels in a straight line on a lake. (a) If the boat achieves a speed of 7.0 m/s in 15 s, what is the boat's average acceleration? magnitude 46 direction in the direction of motion m/s? 11 m/s. What is the boat's average acceleration for the total time? (b) then, in 4.5 more seconds, the boat's speed magnitude direction ter a number of motion X m/s Need Help? Submit Answer Viewing Saved Work Revert to Last Response SHIPPS14 2.1.014. 0.71/1.1 points) DETAILS PREVIOUS ANSWERS est saved Thursday, June 11, 2020, 2:59 PM -actice Another Type here to search o i E 1 lyje

Answer 1

Here we have given that,

Initial velocity till the time of 15 sec is 7m/s

So that here acceleration will be,

V = U + at

a = 7/15 = 0.46 m/s2

Now this V will become u for the next case so that  

Again applying the same rule we will get,

V = u +at

11 = 7 + a' × (4.5 )

a' = 0.8888888889 m/s2

Hence the average acceleration will be given as,

a(avg ) = 0.888 m/s2