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Amit Saxena Grade: upto college level
`         It is 260 km from Patna to Ranchi by air and 320 km by road. An aeroplane takes 30 minutes to go from Patna to Ranchi whereas a delux bus takes 8 hours. (a) Find the average speed of the plane. (b) Find the average speed of the bus. (c) Find the average velocity of the plane. (d) Find the average velocity of the bus.`
3 years ago

Navjyot Kalra
654 Points
```										Sol. (a) Vave of plane (Distance / Time) = 260/0.5 = 520 km/hr.
(b) Vave of bus = 320 / 8 = 40 km/hr.
d) Straight path distance between plane to Ranchi is equal to the displacement of bus.
∴ Velocity = V ⃗ave = 260/8 = 32.5 km/hr.

```
3 years ago
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