Question

an object moves 1st one third of the distance with 40m/s next one third with 30m/s and remaining distance with 20m/s .object returns to the starting point with 80m/s. find average speed and average velocity​

Answer 1

Answer:

Let us assume the opposite, i.e., √5 is a rational number. Hence, √5 can be written as in the form ab where a and b(b≠0) are co-prime (no common factor other than 1 ). By theorem: if p is a prime number and p divides a2, then p divides a, where a in a positive number. ... This means that 5 is a common factor of a and b.