PLEASE HELP WITH PART C AND SHOW ALL WORK. THANK YOU. HW#2 Begin Date: 9/2/2018

Question

PLEASE HELP WITH PART C AND SHOW ALL WORK. THANK YOU.

HW#2 Begin Date: 9/2/2018 12:01:00 AM-Due Date: 9/12/2018 11:59:00 PM End Date: 12/17/2018 11:59:00 PM (10%) Problem 4: A car accelerates in the +x direction from rest with a constant acceleration of a 1.92 m/s for t 20 s. At that point the driver notices a tree limb that has fallen on the road and brakes hard for = 5 s until it comes to a stop Otheexpertta.com G ee 33% Part (a) Write an expression for the car's speed just before the driver begins braking, vi v1at Correct! q) 33% Part (b) If the limb is on the road at a distance of 550 meters from where the car began its initial acceleration, will the car hit the limb? o Correct! * 33% Part (c) How far, in meters, from the original location of the limb will the car be when it stops? Grade Summa Deductions Potential rY 4% 96% sin0 cotanasin acos0 atan0 acotan sinhO cosh tanh cotanh0 cos) tan Submissions Attempts remaining: 14 (0% per attempt) detailed view 0% 0% 0% 1096 END Degrees Radians Submit

Explanation / Answer

3.

Distance during accelerated motion

d1= 0.5*1.92*20 ^2=385

Distance durimg decelerated moment

d2= 1.92*20* 5-0.5*(1.92*20)/5* 5^2 = 96

Tital distance the car travelled

= 385+96

= 481 m

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Comment in case any doubt... GOOD luck

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