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FrozenT [24]
4 years ago
5

A certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 28.0 m/s. With what maximum sp

eed can it go around a curve having a radius of 73.0 m?
Physics
1 answer:
Dima020 [189]4 years ago
5 0

Given Information:  

Radius = r₁ = 150 m

Radius = r₂ = 73 m

Maximum speed = v₁ = 28.0 m/s

Required Information:  

Maximum speed = v₂ = ?

Answer:

Maximum speed v₂ = 19.53 m/s

Explanation:

The maximum acceleration of the truck is

a = v²₁/r₁

a = 28²/150

a = 5.226 m/s²

Now if we change the radius to r₂ = 73 m

Then the maximum speed of the truck is

v₂ = √a*r₂

v₂ = √5.226*73

v₂ = 19.53 m/s

So the speed of the truck is decreased when the radius of curve is decreased.

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Answer:

2.68 hours

Explanation:

A.) Suppose the wind blows out from the west (with the air moving east). The pilot should then head her plane to northwest direction to move directly north.

B.) Given that plane flies at a speed of 102 km/h in still air. And the wind blows out from the west (with the air moving east) at a speed of 46 km/h.

The plan resultant speed can be calculated by using pythagorean theorem.

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Time = 300/111.89

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4 years ago
A car moves with a speed of 30 metres per second calculate the distance travelled in 30 seconds
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