Question

Q. A particle moving in a straight line covers half the distance with speed of 12 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively.
The average speed of the particle during this motion is :
(1) 8.0 m/s
(2) 12.0 m/s
(3) 10.0 m/s
(4) 9.8 m/s​

Answer 1

Answer:

and = 8m/s

Explanation:

v1=12.

v2=4.5+7.5/2

v2 =6