Question

a particle moving in a straight line covers half the distance with a speed of 3m/s. The other half of the distance is covered in two equal time intervals with speeds 4.5m/s and 7.5m/s respectively. the average speed of the particle during this motion is?

Answer 1

Answer:

4

Explanation:

v=(4.5+7.5)/2=6, bcoz it covers in equal interval

now as the distance covered are equal in 2 cases,

Vavg=2*v1*v2/v1+v2= (2*3*6)/3+6=4m/s