A car is travelling at vo = 21 m/s when a passing obstruction is sighted ahead at 120 m. The driver decelerates constantly at 4 m/s2 until it is 70 m away from the former location of the obstruction, then accelerates at 3 m/s² for 15 seconds. 1. Find the total distance travelled by the car for the whole duration. m use 2 decimal places 2. Find the speed when it is 70 m away from the obstruction. m/s use

A car is travelling at vo = 21 m/s when a passing obstruction is sighted ahead at 120 m. The driver decelerates constantly at 4 m/s2 until it is 70 m away from the former location of the obstruction, then accelerates at 3 m/s² for 15 seconds. 1. Find the total distance travelled by the car for the whole duration. m use 2 decimal places 2. Find the speed when it is 70 m away from the obstruction. m/s use

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

A car is travelling at vo = 21 m/s when a passing obstruction is sighted ahead at 120 m. The driver
decelerates constantly at 4 m/s² until it is 70 m away from the former location of the obstruction,
then accelerates at 3 m/s² for 15 seconds.
1. Find the total distance travelled by the car for the whole duration.
m use 2 decimal places
m/s use
2. Find the speed when it is 70 m away from the obstruction.
2 decimal places
3. Find the final speed.
m/s use 2 decimal places

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