Three different objects of masses `m_(1) , m_(2)` and `m_(2)` are allowed to fall from rest and from the same point `O` along three different frictionless paths. The speeds of three objects on reaching the ground will be:

Answer

B

Explanation

Average velocity
`=("Displacement")/("time interval")=("Area under v-t curve")/("time")`

`20=(1/2[25+25-2t]xx5t)/25rArr t=5, 20`