Class Management I Help Quiz 6 Begin Date: 6/17/2018 12:01:00 AM -- Due Date: 8/
ID: 1732090 • Letter: C
Question
Class Management I Help Quiz 6 Begin Date: 6/17/2018 12:01:00 AM -- Due Date: 8/2/2018 11:59:00 PM End Date: 8/16/2018 11:59:00 PM (33%) Problem 3: When starting a foot race, a 73.5 kg sprinter exerts an average force of 630 N backward on the ground for 0.65 s Randomized Variables m = 73.5 kg f 630 N t 0.65 s 50% Part (a) what is his final speed in m/s? Grade Summary Deductions Potential 0% 100% sin cos tan) ( cotan) asin) acos0 Attempts remaining: 5 (20% per attempt) detailed view acotan sinh coshOtanh)cotanh) O Degrees O Radians Submit Hint I give up! Hits: 10% deduction per hint. Hints remaining: 4 Feedback: 10% deduction per feedback. 50% Part (b) How far does he travel in meters?Explanation / Answer
Acceleration of mass
a= F/m= 630/73.5= 8.571 m/s^2
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Velocity
v= at= 8 571* 0.65= 5.571 m/s
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S= 0.5* at^2= 0.5* 8.571*0.65^2
= 1.81 m
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