Calculate the resultant of the pair of velocities 100 km/h north and 75 km/h south. Calculate the resultant if both of the velocities are directed north. ?
Step 1 of 3
Answer : 2 2 2 As We know that: Resultant vector is given by R A + B + 2ABcos ……….(1) Now here we have to find the resultant of the velocities which are in the same direction,So the angle between the two vectors is zero, therefore cos 0 = 1 Now substitute the value of cos cos = 1 2 2 We get R = A + B + 2AB ……………(2) Now here a= 100 km/h, b= 75 km/h substitute these values in equation (2) We get R = 100 + 75 + 2(100 × 75 )……………(3) R = 123.1 m/s Resultant velocity we be R = 123.1 m/s
Textbook: Conceptual Physics
Author: Paul G. Hewitt
Since the solution to 1PC from 5 chapter was answered, more than 415 students have viewed the full step-by-step answer. The answer to “Calculate the resultant of the pair of velocities 100 km/h north and 75 km/h south. Calculate the resultant if both of the velocities are directed north. ?” is broken down into a number of easy to follow steps, and 27 words. Conceptual Physics was written by and is associated to the ISBN: 9780321909107. The full step-by-step solution to problem: 1PC from chapter: 5 was answered by , our top Physics solution expert on 04/03/17, 08:01AM. This full solution covers the following key subjects: velocities, calculate, resultant, North, pair. This expansive textbook survival guide covers 45 chapters, and 4650 solutions. This textbook survival guide was created for the textbook: Conceptual Physics, edition: 12.