

InterviewSolution
Saved Bookmarks
1. |
05. A car is moving along a straight road with auniform acceleration. It passes through twopoints P and Q separated by a distance withvelocities 30 km/h and 40 kh/h respectivelyWhat is the velocity of the car midway betweenP and Q?(1) 33.3 km/h(2) 0.35 km/h(3) 25/2 km/h (4) 202 km/h |
Answer» Given that vp= 30km/h vq= 40km/h Assume acceleration of the car is a. PQ = s Using, v^2= u^2+ 2as => 402= 30^2+2as => 2as = 700 => as = 350 ....................(1) Now, assume velocity of car at a midpoint of PQ is v'. Then v^'2= vp^2+ 2a(s/2) => v'^2= 900 + 350 = 1250 => v' = 35.35 m/s. |
|