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A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a distance with velocity 30 km/h and 40 km/h respectively. The velocity of the car midway between P and Q is
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- 33.3 km/h
- km/ h
- km/h
- 35 km/h
Correct Option: C
Let PQ = x , then
| a = | = | ||
| 2x | x |
[ ∵ v² = u² + 2as]
Also, velocity at mid point is given by
| v² - 30² = 2 × | × | ||
| x | 2 |
This gives v = 25√2 km/h
